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classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶ classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatParams.html
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langchain.chat_models.anthropic.convert_messages_to_prompt_anthropic¶ langchain.chat_models.anthropic.convert_messages_to_prompt_anthropic(messages: List[BaseMessage], *, human_prompt: str = '\n\nHuman:', ai_prompt: str = '\n\nAssistant:') → str[source]¶ Format a list of messages into a full prompt for the Anthropic model Args:messages (List[BaseMessage]): List of BaseMessage to combine. human_prompt (str, optional): Human prompt tag. Defaults to “ Human:”.ai_prompt (str, optional): AI prompt tag. Defaults to “ Assistant:”. Returns:str: Combined string with necessary human_prompt and ai_prompt tags.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.anthropic.convert_messages_to_prompt_anthropic.html
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langchain.chat_models.bedrock.BedrockChat¶ class langchain.chat_models.bedrock.BedrockChat[source]¶ Bases: BaseChatModel, BedrockBase Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Callbacks = None¶ Callbacks to add to the run trace. param credentials_profile_name: Optional[str] = None¶ The name of the profile in the ~/.aws/credentials or ~/.aws/config files, which has either access keys or role information specified. If not specified, the default credential profile or, if on an EC2 instance, credentials from IMDS will be used. See: https://boto3.amazonaws.com/v1/documentation/api/latest/guide/credentials.html param endpoint_url: Optional[str] = None¶ Needed if you don’t want to default to us-east-1 endpoint param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param model_id: str [Required]¶ Id of the model to call, e.g., amazon.titan-text-express-v1, this is equivalent to the modelId property in the list-foundation-models api param model_kwargs: Optional[Dict] = None¶ Key word arguments to pass to the model. param provider_stop_sequence_key_name_map: Mapping[str, str] = {'ai21': 'stop_sequences', 'amazon': 'stopSequences', 'anthropic': 'stop_sequences'}¶ param region_name: Optional[str] = None¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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param region_name: Optional[str] = None¶ The aws region e.g., us-west-2. Fallsback to AWS_DEFAULT_REGION env variable or region specified in ~/.aws/config in case it is not provided here. param streaming: bool = False¶ Whether to stream the results. param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk]¶ Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str¶ classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data deep – set to True to make a deep copy of the model Returns new model instance dict(**kwargs: Any) → Dict¶ Return a dictionary of the LLM. classmethod from_orm(obj: Any) → Model¶ generate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call generate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Pass a sequence of prompts to the model and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls,
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. classmethod get_lc_namespace() → List[str]¶ Get the namespace of the langchain object. For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”] get_num_tokens(text: str) → int¶ Get the number of tokens present in the text. Useful for checking if an input will fit in a model’s context window. Parameters text – The string input to tokenize. Returns The integer number of tokens in the text. get_num_tokens_from_messages(messages: List[BaseMessage]) → int¶ Get the number of tokens in the messages. Useful for checking if an input will fit in a model’s context window. Parameters messages – The message inputs to tokenize. Returns The sum of the number of tokens across the messages.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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Returns The sum of the number of tokens across the messages. get_token_ids(text: str) → List[int]¶ Return the ordered ids of the tokens in a text. Parameters text – The string input to tokenize. Returns A list of ids corresponding to the tokens in the text, in order they occurin the text. invoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ classmethod is_lc_serializable() → bool¶ Is this class serializable? json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode¶ Generate a JSON representation of the model, include and exclude arguments as per dict(). encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps(). classmethod lc_id() → List[str]¶ A unique identifier for this class for serialization purposes. The unique identifier is a list of strings that describes the path to the object. map() → Runnable[List[Input], List[Output]]¶ Return a new Runnable that maps a list of inputs to a list of outputs, by calling invoke() with each input.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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by calling invoke() with each input. classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ classmethod parse_obj(obj: Any) → Model¶ classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ predict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Pass a single string input to the model and return a string prediction. Use this method when passing in raw text. If you want to pass in specifictypes of chat messages, use predict_messages. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. predict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Pass a message sequence to the model and return a message prediction. Use this method when passing in chat messages. If you want to pass in raw text,use predict. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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to the model provider API call. Returns Top model prediction as a message. classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶ stream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → Iterator[BaseMessageChunk]¶ Default implementation of stream, which calls invoke. Subclasses should override this method if they support streaming output. to_json() → Union[SerializedConstructor, SerializedNotImplemented]¶ to_json_not_implemented() → SerializedNotImplemented¶ transform(input: Iterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]¶ Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated. classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶ with_config(config: Optional[RunnableConfig] = None, **kwargs: Any) → Runnable[Input, Output]¶ Bind config to a Runnable, returning a new Runnable.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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Bind config to a Runnable, returning a new Runnable. with_fallbacks(fallbacks: ~typing.Sequence[~langchain.schema.runnable.base.Runnable[~langchain.schema.runnable.utils.Input, ~langchain.schema.runnable.utils.Output]], *, exceptions_to_handle: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,)) → RunnableWithFallbacks[Input, Output]¶ with_retry(*, retry_if_exception_type: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,), wait_exponential_jitter: bool = True, stop_after_attempt: int = 3) → Runnable[Input, Output]¶ property InputType: TypeAlias¶ Get the input type for this runnable. property OutputType: Any¶ Get the input type for this runnable. property input_schema: Type[pydantic.main.BaseModel]¶ property lc_attributes: Dict¶ List of attribute names that should be included in the serialized kwargs. These attributes must be accepted by the constructor. property lc_secrets: Dict[str, str]¶ A map of constructor argument names to secret ids. For example,{“openai_api_key”: “OPENAI_API_KEY”} property output_schema: Type[pydantic.main.BaseModel]¶ Examples using BedrockChat¶ Bedrock Chat
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.bedrock.BedrockChat.html
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langchain.chat_models.jinachat.acompletion_with_retry¶ async langchain.chat_models.jinachat.acompletion_with_retry(llm: JinaChat, **kwargs: Any) → Any[source]¶ Use tenacity to retry the async completion call.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.jinachat.acompletion_with_retry.html
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langchain.chat_models.base.BaseChatModel¶ class langchain.chat_models.base.BaseChatModel[source]¶ Bases: BaseLanguageModel[BaseMessageChunk], ABC Base class for Chat models. Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[langchain.callbacks.base.BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Optional[Union[List[langchain.callbacks.base.BaseCallbackHandler], langchain.callbacks.base.BaseCallbackManager]] = None¶ Callbacks to add to the run trace. param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage[source]¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult[source]¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult[source]¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk[source]¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str[source]¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage[source]¶ Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk][source]¶ Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str[source]¶ classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data deep – set to True to make a deep copy of the model Returns new model instance dict(**kwargs: Any) → Dict[source]¶ Return a dictionary of the LLM.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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Return a dictionary of the LLM. classmethod from_orm(obj: Any) → Model¶ generate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult[source]¶ Top Level call generate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult[source]¶ Pass a sequence of prompts to the model and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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classmethod get_lc_namespace() → List[str]¶ Get the namespace of the langchain object. For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”] get_num_tokens(text: str) → int¶ Get the number of tokens present in the text. Useful for checking if an input will fit in a model’s context window. Parameters text – The string input to tokenize. Returns The integer number of tokens in the text. get_num_tokens_from_messages(messages: List[BaseMessage]) → int¶ Get the number of tokens in the messages. Useful for checking if an input will fit in a model’s context window. Parameters messages – The message inputs to tokenize. Returns The sum of the number of tokens across the messages. get_token_ids(text: str) → List[int]¶ Return the ordered ids of the tokens in a text. Parameters text – The string input to tokenize. Returns A list of ids corresponding to the tokens in the text, in order they occurin the text. invoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk[source]¶ classmethod is_lc_serializable() → bool¶ Is this class serializable?
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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classmethod is_lc_serializable() → bool¶ Is this class serializable? json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode¶ Generate a JSON representation of the model, include and exclude arguments as per dict(). encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps(). classmethod lc_id() → List[str]¶ A unique identifier for this class for serialization purposes. The unique identifier is a list of strings that describes the path to the object. map() → Runnable[List[Input], List[Output]]¶ Return a new Runnable that maps a list of inputs to a list of outputs, by calling invoke() with each input. classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ classmethod parse_obj(obj: Any) → Model¶ classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ predict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str[source]¶ Pass a single string input to the model and return a string prediction.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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Pass a single string input to the model and return a string prediction. Use this method when passing in raw text. If you want to pass in specifictypes of chat messages, use predict_messages. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. predict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage[source]¶ Pass a message sequence to the model and return a message prediction. Use this method when passing in chat messages. If you want to pass in raw text,use predict. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶ stream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → Iterator[BaseMessageChunk][source]¶ Default implementation of stream, which calls invoke. Subclasses should override this method if they support streaming output.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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Subclasses should override this method if they support streaming output. to_json() → Union[SerializedConstructor, SerializedNotImplemented]¶ to_json_not_implemented() → SerializedNotImplemented¶ transform(input: Iterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]¶ Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated. classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶ with_config(config: Optional[RunnableConfig] = None, **kwargs: Any) → Runnable[Input, Output]¶ Bind config to a Runnable, returning a new Runnable. with_fallbacks(fallbacks: ~typing.Sequence[~langchain.schema.runnable.base.Runnable[~langchain.schema.runnable.utils.Input, ~langchain.schema.runnable.utils.Output]], *, exceptions_to_handle: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,)) → RunnableWithFallbacks[Input, Output]¶ with_retry(*, retry_if_exception_type: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,), wait_exponential_jitter: bool = True, stop_after_attempt: int = 3) → Runnable[Input, Output]¶ property InputType: TypeAlias¶ Get the input type for this runnable. property OutputType: Any¶ Get the input type for this runnable. property input_schema: Type[pydantic.main.BaseModel]¶ property lc_attributes: Dict¶ List of attribute names that should be included in the serialized kwargs.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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List of attribute names that should be included in the serialized kwargs. These attributes must be accepted by the constructor. property lc_secrets: Dict[str, str]¶ A map of constructor argument names to secret ids. For example,{“openai_api_key”: “OPENAI_API_KEY”} property output_schema: Type[pydantic.main.BaseModel]¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.BaseChatModel.html
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langchain.chat_models.azureml_endpoint.LlamaContentFormatter¶ class langchain.chat_models.azureml_endpoint.LlamaContentFormatter[source]¶ Content formatter for LLaMA. Attributes SUPPORTED_ROLES accepts The MIME type of the response data returned from the endpoint content_type The MIME type of the input data passed to the endpoint Methods __init__() escape_special_characters(prompt) Escapes any special characters in prompt format_request_payload(prompt, model_kwargs) Formats the request according the the chosen api format_response_payload(output) Formats response __init__()¶ static escape_special_characters(prompt: str) → str¶ Escapes any special characters in prompt format_request_payload(prompt: str, model_kwargs: Dict) → bytes[source]¶ Formats the request according the the chosen api format_response_payload(output: bytes) → str[source]¶ Formats response Examples using LlamaContentFormatter¶ AzureML Chat Online Endpoint
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.azureml_endpoint.LlamaContentFormatter.html
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langchain.chat_models.google_palm.chat_with_retry¶ langchain.chat_models.google_palm.chat_with_retry(llm: ChatGooglePalm, **kwargs: Any) → Any[source]¶ Use tenacity to retry the completion call.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.google_palm.chat_with_retry.html
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langchain.chat_models.base.SimpleChatModel¶ class langchain.chat_models.base.SimpleChatModel[source]¶ Bases: BaseChatModel Simple Chat Model. Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[langchain.callbacks.base.BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Optional[Union[List[langchain.callbacks.base.BaseCallbackHandler], langchain.callbacks.base.BaseCallbackManager]] = None¶ Callbacks to add to the run trace. param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk]¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str¶ classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data deep – set to True to make a deep copy of the model Returns new model instance dict(**kwargs: Any) → Dict¶ Return a dictionary of the LLM. classmethod from_orm(obj: Any) → Model¶ generate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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Top Level call generate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Pass a sequence of prompts to the model and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. classmethod get_lc_namespace() → List[str]¶ Get the namespace of the langchain object. For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”] get_num_tokens(text: str) → int¶ Get the number of tokens present in the text. Useful for checking if an input will fit in a model’s context window. Parameters text – The string input to tokenize. Returns
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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Parameters text – The string input to tokenize. Returns The integer number of tokens in the text. get_num_tokens_from_messages(messages: List[BaseMessage]) → int¶ Get the number of tokens in the messages. Useful for checking if an input will fit in a model’s context window. Parameters messages – The message inputs to tokenize. Returns The sum of the number of tokens across the messages. get_token_ids(text: str) → List[int]¶ Return the ordered ids of the tokens in a text. Parameters text – The string input to tokenize. Returns A list of ids corresponding to the tokens in the text, in order they occurin the text. invoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ classmethod is_lc_serializable() → bool¶ Is this class serializable? json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode¶ Generate a JSON representation of the model, include and exclude arguments as per dict(). encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps(). classmethod lc_id() → List[str]¶ A unique identifier for this class for serialization purposes. The unique identifier is a list of strings that describes the path
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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The unique identifier is a list of strings that describes the path to the object. map() → Runnable[List[Input], List[Output]]¶ Return a new Runnable that maps a list of inputs to a list of outputs, by calling invoke() with each input. classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ classmethod parse_obj(obj: Any) → Model¶ classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ predict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Pass a single string input to the model and return a string prediction. Use this method when passing in raw text. If you want to pass in specifictypes of chat messages, use predict_messages. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. predict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Pass a message sequence to the model and return a message prediction. Use this method when passing in chat messages. If you want to pass in raw text,use predict. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶ stream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → Iterator[BaseMessageChunk]¶ Default implementation of stream, which calls invoke. Subclasses should override this method if they support streaming output. to_json() → Union[SerializedConstructor, SerializedNotImplemented]¶ to_json_not_implemented() → SerializedNotImplemented¶ transform(input: Iterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]¶ Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated. classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶ with_config(config: Optional[RunnableConfig] = None, **kwargs: Any) → Runnable[Input, Output]¶ Bind config to a Runnable, returning a new Runnable.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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Bind config to a Runnable, returning a new Runnable. with_fallbacks(fallbacks: ~typing.Sequence[~langchain.schema.runnable.base.Runnable[~langchain.schema.runnable.utils.Input, ~langchain.schema.runnable.utils.Output]], *, exceptions_to_handle: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,)) → RunnableWithFallbacks[Input, Output]¶ with_retry(*, retry_if_exception_type: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,), wait_exponential_jitter: bool = True, stop_after_attempt: int = 3) → Runnable[Input, Output]¶ property InputType: TypeAlias¶ Get the input type for this runnable. property OutputType: Any¶ Get the input type for this runnable. property input_schema: Type[pydantic.main.BaseModel]¶ property lc_attributes: Dict¶ List of attribute names that should be included in the serialized kwargs. These attributes must be accepted by the constructor. property lc_secrets: Dict[str, str]¶ A map of constructor argument names to secret ids. For example,{“openai_api_key”: “OPENAI_API_KEY”} property output_schema: Type[pydantic.main.BaseModel]¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.base.SimpleChatModel.html
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langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway¶ class langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway[source]¶ Bases: BaseChatModel Javelin AI Gateway chat models API. To use, you should have the javelin_sdk python package installed. For more information, see https://docs.getjavelin.io Example from langchain.chat_models import ChatJavelinAIGateway chat = ChatJavelinAIGateway( gateway_uri="<javelin-ai-gateway-uri>", route="<javelin-ai-gateway-chat-route>", params={ "temperature": 0.1 } ) Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Callbacks = None¶ Callbacks to add to the run trace. param client: Any = None¶ javelin client. param gateway_uri: Optional[str] = None¶ The URI for the Javelin AI Gateway API. param javelin_api_key: Optional[str] = None¶ The API key for the Javelin AI Gateway. param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param params: Optional[langchain.chat_models.javelin_ai_gateway.ChatParams] = None¶ Parameters for the Javelin AI Gateway LLM. param route: str [Required]¶ The route to use for the Javelin AI Gateway API. param tags: Optional[List[str]] = None¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Asynchronously pass messages to the model and return a message prediction.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk]¶ Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str¶ classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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exclude – fields to exclude from new model, as with values this takes precedence over include update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data deep – set to True to make a deep copy of the model Returns new model instance dict(**kwargs: Any) → Dict¶ Return a dictionary of the LLM. classmethod from_orm(obj: Any) → Model¶ generate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call generate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Pass a sequence of prompts to the model and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. classmethod get_lc_namespace() → List[str]¶ Get the namespace of the langchain object. For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”] get_num_tokens(text: str) → int¶ Get the number of tokens present in the text. Useful for checking if an input will fit in a model’s context window. Parameters text – The string input to tokenize. Returns The integer number of tokens in the text. get_num_tokens_from_messages(messages: List[BaseMessage]) → int¶ Get the number of tokens in the messages. Useful for checking if an input will fit in a model’s context window. Parameters messages – The message inputs to tokenize. Returns The sum of the number of tokens across the messages. get_token_ids(text: str) → List[int]¶ Return the ordered ids of the tokens in a text. Parameters text – The string input to tokenize. Returns A list of ids corresponding to the tokens in the text, in order they occurin the text. invoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ classmethod is_lc_serializable() → bool¶ Is this class serializable?
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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classmethod is_lc_serializable() → bool¶ Is this class serializable? json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode¶ Generate a JSON representation of the model, include and exclude arguments as per dict(). encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps(). classmethod lc_id() → List[str]¶ A unique identifier for this class for serialization purposes. The unique identifier is a list of strings that describes the path to the object. map() → Runnable[List[Input], List[Output]]¶ Return a new Runnable that maps a list of inputs to a list of outputs, by calling invoke() with each input. classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ classmethod parse_obj(obj: Any) → Model¶ classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ predict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Pass a single string input to the model and return a string prediction.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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Pass a single string input to the model and return a string prediction. Use this method when passing in raw text. If you want to pass in specifictypes of chat messages, use predict_messages. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. predict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Pass a message sequence to the model and return a message prediction. Use this method when passing in chat messages. If you want to pass in raw text,use predict. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶ stream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → Iterator[BaseMessageChunk]¶ Default implementation of stream, which calls invoke. Subclasses should override this method if they support streaming output.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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Subclasses should override this method if they support streaming output. to_json() → Union[SerializedConstructor, SerializedNotImplemented]¶ to_json_not_implemented() → SerializedNotImplemented¶ transform(input: Iterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]¶ Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated. classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶ with_config(config: Optional[RunnableConfig] = None, **kwargs: Any) → Runnable[Input, Output]¶ Bind config to a Runnable, returning a new Runnable. with_fallbacks(fallbacks: ~typing.Sequence[~langchain.schema.runnable.base.Runnable[~langchain.schema.runnable.utils.Input, ~langchain.schema.runnable.utils.Output]], *, exceptions_to_handle: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,)) → RunnableWithFallbacks[Input, Output]¶ with_retry(*, retry_if_exception_type: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,), wait_exponential_jitter: bool = True, stop_after_attempt: int = 3) → Runnable[Input, Output]¶ property InputType: TypeAlias¶ Get the input type for this runnable. property OutputType: Any¶ Get the input type for this runnable. property input_schema: Type[pydantic.main.BaseModel]¶ property lc_attributes: Dict¶ List of attribute names that should be included in the serialized kwargs.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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List of attribute names that should be included in the serialized kwargs. These attributes must be accepted by the constructor. property lc_secrets: Dict[str, str]¶ A map of constructor argument names to secret ids. For example,{“openai_api_key”: “OPENAI_API_KEY”} property output_schema: Type[pydantic.main.BaseModel]¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.javelin_ai_gateway.ChatJavelinAIGateway.html
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langchain.chat_models.fake.FakeMessagesListChatModel¶ class langchain.chat_models.fake.FakeMessagesListChatModel[source]¶ Bases: BaseChatModel Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Callbacks = None¶ Callbacks to add to the run trace. param i: int = 0¶ param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param responses: List[langchain.schema.messages.BaseMessage] [Required]¶ param sleep: Optional[float] = None¶ param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk]¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str¶ classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data deep – set to True to make a deep copy of the model Returns new model instance dict(**kwargs: Any) → Dict¶ Return a dictionary of the LLM. classmethod from_orm(obj: Any) → Model¶ generate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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Top Level call generate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Pass a sequence of prompts to the model and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. classmethod get_lc_namespace() → List[str]¶ Get the namespace of the langchain object. For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”] get_num_tokens(text: str) → int¶ Get the number of tokens present in the text. Useful for checking if an input will fit in a model’s context window. Parameters text – The string input to tokenize. Returns
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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Parameters text – The string input to tokenize. Returns The integer number of tokens in the text. get_num_tokens_from_messages(messages: List[BaseMessage]) → int¶ Get the number of tokens in the messages. Useful for checking if an input will fit in a model’s context window. Parameters messages – The message inputs to tokenize. Returns The sum of the number of tokens across the messages. get_token_ids(text: str) → List[int]¶ Return the ordered ids of the tokens in a text. Parameters text – The string input to tokenize. Returns A list of ids corresponding to the tokens in the text, in order they occurin the text. invoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ classmethod is_lc_serializable() → bool¶ Is this class serializable? json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode¶ Generate a JSON representation of the model, include and exclude arguments as per dict(). encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps(). classmethod lc_id() → List[str]¶ A unique identifier for this class for serialization purposes. The unique identifier is a list of strings that describes the path
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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The unique identifier is a list of strings that describes the path to the object. map() → Runnable[List[Input], List[Output]]¶ Return a new Runnable that maps a list of inputs to a list of outputs, by calling invoke() with each input. classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ classmethod parse_obj(obj: Any) → Model¶ classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ predict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Pass a single string input to the model and return a string prediction. Use this method when passing in raw text. If you want to pass in specifictypes of chat messages, use predict_messages. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. predict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Pass a message sequence to the model and return a message prediction. Use this method when passing in chat messages. If you want to pass in raw text,use predict. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶ stream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → Iterator[BaseMessageChunk]¶ Default implementation of stream, which calls invoke. Subclasses should override this method if they support streaming output. to_json() → Union[SerializedConstructor, SerializedNotImplemented]¶ to_json_not_implemented() → SerializedNotImplemented¶ transform(input: Iterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]¶ Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated. classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶ with_config(config: Optional[RunnableConfig] = None, **kwargs: Any) → Runnable[Input, Output]¶ Bind config to a Runnable, returning a new Runnable.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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Bind config to a Runnable, returning a new Runnable. with_fallbacks(fallbacks: ~typing.Sequence[~langchain.schema.runnable.base.Runnable[~langchain.schema.runnable.utils.Input, ~langchain.schema.runnable.utils.Output]], *, exceptions_to_handle: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,)) → RunnableWithFallbacks[Input, Output]¶ with_retry(*, retry_if_exception_type: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,), wait_exponential_jitter: bool = True, stop_after_attempt: int = 3) → Runnable[Input, Output]¶ property InputType: TypeAlias¶ Get the input type for this runnable. property OutputType: Any¶ Get the input type for this runnable. property input_schema: Type[pydantic.main.BaseModel]¶ property lc_attributes: Dict¶ List of attribute names that should be included in the serialized kwargs. These attributes must be accepted by the constructor. property lc_secrets: Dict[str, str]¶ A map of constructor argument names to secret ids. For example,{“openai_api_key”: “OPENAI_API_KEY”} property output_schema: Type[pydantic.main.BaseModel]¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fake.FakeMessagesListChatModel.html
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langchain.chat_models.ollama.ChatOllama¶ class langchain.chat_models.ollama.ChatOllama[source]¶ Bases: BaseChatModel, _OllamaCommon Ollama locally runs large language models. To use, follow the instructions at https://ollama.ai/. Example from langchain.chat_models import ChatOllama ollama = ChatOllama(model="llama2") Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param base_url: str = 'http://localhost:11434'¶ Base url the model is hosted under. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Callbacks = None¶ Callbacks to add to the run trace. param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param mirostat: Optional[int] = None¶ Enable Mirostat sampling for controlling perplexity. (default: 0, 0 = disabled, 1 = Mirostat, 2 = Mirostat 2.0) param mirostat_eta: Optional[float] = None¶ Influences how quickly the algorithm responds to feedback from the generated text. A lower learning rate will result in slower adjustments, while a higher learning rate will make the algorithm more responsive. (Default: 0.1) param mirostat_tau: Optional[float] = None¶ Controls the balance between coherence and diversity of the output. A lower value will result in more focused and coherent text. (Default: 5.0)
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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coherent text. (Default: 5.0) param model: str = 'llama2'¶ Model name to use. param num_ctx: Optional[int] = None¶ Sets the size of the context window used to generate the next token. (Default: 2048) param num_gpu: Optional[int] = None¶ The number of GPUs to use. On macOS it defaults to 1 to enable metal support, 0 to disable. param num_thread: Optional[int] = None¶ Sets the number of threads to use during computation. By default, Ollama will detect this for optimal performance. It is recommended to set this value to the number of physical CPU cores your system has (as opposed to the logical number of cores). param repeat_last_n: Optional[int] = None¶ Sets how far back for the model to look back to prevent repetition. (Default: 64, 0 = disabled, -1 = num_ctx) param repeat_penalty: Optional[float] = None¶ Sets how strongly to penalize repetitions. A higher value (e.g., 1.5) will penalize repetitions more strongly, while a lower value (e.g., 0.9) will be more lenient. (Default: 1.1) param stop: Optional[List[str]] = None¶ Sets the stop tokens to use. param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param temperature: Optional[float] = None¶ The temperature of the model. Increasing the temperature will make the model answer more creatively. (Default: 0.8) param tfs_z: Optional[float] = None¶ Tail free sampling is used to reduce the impact of less probable
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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Tail free sampling is used to reduce the impact of less probable tokens from the output. A higher value (e.g., 2.0) will reduce the impact more, while a value of 1.0 disables this setting. (default: 1) param top_k: Optional[int] = None¶ Reduces the probability of generating nonsense. A higher value (e.g. 100) will give more diverse answers, while a lower value (e.g. 10) will be more conservative. (Default: 40) param top_p: Optional[int] = None¶ Works together with top-k. A higher value (e.g., 0.95) will lead to more diverse text, while a lower value (e.g., 0.5) will generate more focused and conservative text. (Default: 0.9) param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk]¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str¶ classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data deep – set to True to make a deep copy of the model Returns new model instance dict(**kwargs: Any) → Dict¶ Return a dictionary of the LLM. classmethod from_orm(obj: Any) → Model¶ generate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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Top Level call generate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Pass a sequence of prompts to the model and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. classmethod get_lc_namespace() → List[str]¶ Get the namespace of the langchain object. For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”] get_num_tokens(text: str) → int¶ Get the number of tokens present in the text. Useful for checking if an input will fit in a model’s context window. Parameters text – The string input to tokenize. Returns
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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Parameters text – The string input to tokenize. Returns The integer number of tokens in the text. get_num_tokens_from_messages(messages: List[BaseMessage]) → int¶ Get the number of tokens in the messages. Useful for checking if an input will fit in a model’s context window. Parameters messages – The message inputs to tokenize. Returns The sum of the number of tokens across the messages. get_token_ids(text: str) → List[int]¶ Return the ordered ids of the tokens in a text. Parameters text – The string input to tokenize. Returns A list of ids corresponding to the tokens in the text, in order they occurin the text. invoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ classmethod is_lc_serializable() → bool[source]¶ Return whether this model can be serialized by Langchain. json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode¶ Generate a JSON representation of the model, include and exclude arguments as per dict(). encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps(). classmethod lc_id() → List[str]¶ A unique identifier for this class for serialization purposes.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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A unique identifier for this class for serialization purposes. The unique identifier is a list of strings that describes the path to the object. map() → Runnable[List[Input], List[Output]]¶ Return a new Runnable that maps a list of inputs to a list of outputs, by calling invoke() with each input. classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ classmethod parse_obj(obj: Any) → Model¶ classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ predict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Pass a single string input to the model and return a string prediction. Use this method when passing in raw text. If you want to pass in specifictypes of chat messages, use predict_messages. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. predict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Pass a message sequence to the model and return a message prediction. Use this method when passing in chat messages. If you want to pass in raw text,use predict. Parameters messages – A sequence of chat messages corresponding to a single model input.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶ stream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → Iterator[BaseMessageChunk]¶ Default implementation of stream, which calls invoke. Subclasses should override this method if they support streaming output. to_json() → Union[SerializedConstructor, SerializedNotImplemented]¶ to_json_not_implemented() → SerializedNotImplemented¶ transform(input: Iterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]¶ Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated. classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶ with_config(config: Optional[RunnableConfig] = None, **kwargs: Any) → Runnable[Input, Output]¶ Bind config to a Runnable, returning a new Runnable.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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Bind config to a Runnable, returning a new Runnable. with_fallbacks(fallbacks: ~typing.Sequence[~langchain.schema.runnable.base.Runnable[~langchain.schema.runnable.utils.Input, ~langchain.schema.runnable.utils.Output]], *, exceptions_to_handle: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,)) → RunnableWithFallbacks[Input, Output]¶ with_retry(*, retry_if_exception_type: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,), wait_exponential_jitter: bool = True, stop_after_attempt: int = 3) → Runnable[Input, Output]¶ property InputType: TypeAlias¶ Get the input type for this runnable. property OutputType: Any¶ Get the input type for this runnable. property input_schema: Type[pydantic.main.BaseModel]¶ property lc_attributes: Dict¶ List of attribute names that should be included in the serialized kwargs. These attributes must be accepted by the constructor. property lc_secrets: Dict[str, str]¶ A map of constructor argument names to secret ids. For example,{“openai_api_key”: “OPENAI_API_KEY”} property output_schema: Type[pydantic.main.BaseModel]¶ Examples using ChatOllama¶ Ollama
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.ollama.ChatOllama.html
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langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint¶ class langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint[source]¶ Bases: SimpleChatModel AzureML Chat models API. Example azure_chat = AzureMLChatOnlineEndpoint( endpoint_url="https://<your-endpoint>.<your_region>.inference.ml.azure.com/score", endpoint_api_key="my-api-key", content_formatter=content_formatter, ) Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Callbacks = None¶ Callbacks to add to the run trace. param content_formatter: Any = None¶ The content formatter that provides an input and output transform function to handle formats between the LLM and the endpoint param endpoint_api_key: str = ''¶ Authentication Key for Endpoint. Should be passed to constructor or specified as env var AZUREML_ENDPOINT_API_KEY. param endpoint_url: str = ''¶ URL of pre-existing Endpoint. Should be passed to constructor or specified as env var AZUREML_ENDPOINT_URL. param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param model_kwargs: Optional[dict] = None¶ Key word arguments to pass to the model. param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param verbose: bool [Optional]¶ Whether to print out response text.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint.html
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param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint.html
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Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Asynchronously pass messages to the model and return a message prediction.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint.html
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Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk]¶ Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint.html
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The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str¶ classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint.html
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exclude – fields to exclude from new model, as with values this takes precedence over include update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data deep – set to True to make a deep copy of the model Returns new model instance dict(**kwargs: Any) → Dict¶ Return a dictionary of the LLM. classmethod from_orm(obj: Any) → Model¶ generate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call generate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Pass a sequence of prompts to the model and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint.html
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first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. classmethod get_lc_namespace() → List[str]¶ Get the namespace of the langchain object. For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”] get_num_tokens(text: str) → int¶ Get the number of tokens present in the text. Useful for checking if an input will fit in a model’s context window. Parameters text – The string input to tokenize. Returns The integer number of tokens in the text. get_num_tokens_from_messages(messages: List[BaseMessage]) → int¶ Get the number of tokens in the messages. Useful for checking if an input will fit in a model’s context window. Parameters messages – The message inputs to tokenize. Returns The sum of the number of tokens across the messages. get_token_ids(text: str) → List[int]¶ Return the ordered ids of the tokens in a text. Parameters text – The string input to tokenize. Returns A list of ids corresponding to the tokens in the text, in order they occurin the text. invoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ classmethod is_lc_serializable() → bool¶ Is this class serializable?
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classmethod is_lc_serializable() → bool¶ Is this class serializable? json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode¶ Generate a JSON representation of the model, include and exclude arguments as per dict(). encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps(). classmethod lc_id() → List[str]¶ A unique identifier for this class for serialization purposes. The unique identifier is a list of strings that describes the path to the object. map() → Runnable[List[Input], List[Output]]¶ Return a new Runnable that maps a list of inputs to a list of outputs, by calling invoke() with each input. classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ classmethod parse_obj(obj: Any) → Model¶ classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ predict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Pass a single string input to the model and return a string prediction.
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Pass a single string input to the model and return a string prediction. Use this method when passing in raw text. If you want to pass in specifictypes of chat messages, use predict_messages. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. predict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Pass a message sequence to the model and return a message prediction. Use this method when passing in chat messages. If you want to pass in raw text,use predict. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶ stream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → Iterator[BaseMessageChunk]¶ Default implementation of stream, which calls invoke. Subclasses should override this method if they support streaming output.
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Subclasses should override this method if they support streaming output. to_json() → Union[SerializedConstructor, SerializedNotImplemented]¶ to_json_not_implemented() → SerializedNotImplemented¶ transform(input: Iterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]¶ Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated. classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶ with_config(config: Optional[RunnableConfig] = None, **kwargs: Any) → Runnable[Input, Output]¶ Bind config to a Runnable, returning a new Runnable. with_fallbacks(fallbacks: ~typing.Sequence[~langchain.schema.runnable.base.Runnable[~langchain.schema.runnable.utils.Input, ~langchain.schema.runnable.utils.Output]], *, exceptions_to_handle: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,)) → RunnableWithFallbacks[Input, Output]¶ with_retry(*, retry_if_exception_type: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,), wait_exponential_jitter: bool = True, stop_after_attempt: int = 3) → Runnable[Input, Output]¶ property InputType: TypeAlias¶ Get the input type for this runnable. property OutputType: Any¶ Get the input type for this runnable. property input_schema: Type[pydantic.main.BaseModel]¶ property lc_attributes: Dict¶ List of attribute names that should be included in the serialized kwargs.
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List of attribute names that should be included in the serialized kwargs. These attributes must be accepted by the constructor. property lc_secrets: Dict[str, str]¶ A map of constructor argument names to secret ids. For example,{“openai_api_key”: “OPENAI_API_KEY”} property output_schema: Type[pydantic.main.BaseModel]¶ Examples using AzureMLChatOnlineEndpoint¶ AzureML Chat Online Endpoint
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint.html
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langchain.chat_models.promptlayer_openai.PromptLayerChatOpenAI¶ class langchain.chat_models.promptlayer_openai.PromptLayerChatOpenAI[source]¶ Bases: ChatOpenAI PromptLayer and OpenAI Chat large language models API. To use, you should have the openai and promptlayer python package installed, and the environment variable OPENAI_API_KEY and PROMPTLAYER_API_KEY set with your openAI API key and promptlayer key respectively. All parameters that can be passed to the OpenAI LLM can also be passed here. The PromptLayerChatOpenAI adds to optional Parameters pl_tags – List of strings to tag the request with. return_pl_id – If True, the PromptLayer request ID will be returned in the generation_info field of the Generation object. Example from langchain.chat_models import PromptLayerChatOpenAI openai = PromptLayerChatOpenAI(model_name="gpt-3.5-turbo") Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Callbacks = None¶ Callbacks to add to the run trace. param max_retries: int = 6¶ Maximum number of retries to make when generating. param max_tokens: Optional[int] = None¶ Maximum number of tokens to generate. param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param model_kwargs: Dict[str, Any] [Optional]¶ Holds any model parameters valid for create call not explicitly specified.
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Holds any model parameters valid for create call not explicitly specified. param model_name: str = 'gpt-3.5-turbo' (alias 'model')¶ Model name to use. param n: int = 1¶ Number of chat completions to generate for each prompt. param openai_api_base: Optional[str] = None¶ param openai_api_key: Optional[str] = None¶ Base URL path for API requests, leave blank if not using a proxy or service emulator. param openai_organization: Optional[str] = None¶ param openai_proxy: Optional[str] = None¶ param pl_tags: Optional[List[str]] = None¶ param request_timeout: Optional[Union[float, Tuple[float, float]]] = None¶ Timeout for requests to OpenAI completion API. Default is 600 seconds. param return_pl_id: Optional[bool] = False¶ param streaming: bool = False¶ Whether to stream the results or not. param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param temperature: float = 0.7¶ What sampling temperature to use. param tiktoken_model_name: Optional[str] = None¶ The model name to pass to tiktoken when using this class. Tiktoken is used to count the number of tokens in documents to constrain them to be under a certain limit. By default, when set to None, this will be the same as the embedding model name. However, there are some cases where you may want to use this Embedding class with a model name not supported by tiktoken. This can include when using Azure embeddings or when using one of the many model providers that expose an OpenAI-like API but with different models. In those cases, in order to avoid erroring
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.promptlayer_openai.PromptLayerChatOpenAI.html
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API but with different models. In those cases, in order to avoid erroring when tiktoken is called, you can specify a model name to use here. param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value,
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.promptlayer_openai.PromptLayerChatOpenAI.html
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need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.promptlayer_openai.PromptLayerChatOpenAI.html
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to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk]¶ Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each
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jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str¶ completion_with_retry(run_manager: Optional[CallbackManagerForLLMRun] = None, **kwargs: Any) → Any¶ Use tenacity to retry the completion call. classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values
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Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data deep – set to True to make a deep copy of the model Returns new model instance dict(**kwargs: Any) → Dict¶ Return a dictionary of the LLM. classmethod from_orm(obj: Any) → Model¶ generate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call generate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Pass a sequence of prompts to the model and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls,
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API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. classmethod get_lc_namespace() → List[str]¶ Get the namespace of the langchain object. For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”] get_num_tokens(text: str) → int¶ Get the number of tokens present in the text. Useful for checking if an input will fit in a model’s context window. Parameters text – The string input to tokenize. Returns The integer number of tokens in the text. get_num_tokens_from_messages(messages: List[BaseMessage]) → int¶ Calculate num tokens for gpt-3.5-turbo and gpt-4 with tiktoken package. Official documentation: https://github.com/openai/openai-cookbook/blob/ main/examples/How_to_format_inputs_to_ChatGPT_models.ipynb
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main/examples/How_to_format_inputs_to_ChatGPT_models.ipynb get_token_ids(text: str) → List[int]¶ Get the tokens present in the text with tiktoken package. invoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ classmethod is_lc_serializable() → bool¶ Return whether this model can be serialized by Langchain. json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode¶ Generate a JSON representation of the model, include and exclude arguments as per dict(). encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps(). classmethod lc_id() → List[str]¶ A unique identifier for this class for serialization purposes. The unique identifier is a list of strings that describes the path to the object. map() → Runnable[List[Input], List[Output]]¶ Return a new Runnable that maps a list of inputs to a list of outputs, by calling invoke() with each input. classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ classmethod parse_obj(obj: Any) → Model¶
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classmethod parse_obj(obj: Any) → Model¶ classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model¶ predict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Pass a single string input to the model and return a string prediction. Use this method when passing in raw text. If you want to pass in specifictypes of chat messages, use predict_messages. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. predict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Pass a message sequence to the model and return a message prediction. Use this method when passing in chat messages. If you want to pass in raw text,use predict. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny¶ classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode¶
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stream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → Iterator[BaseMessageChunk]¶ Default implementation of stream, which calls invoke. Subclasses should override this method if they support streaming output. to_json() → Union[SerializedConstructor, SerializedNotImplemented]¶ to_json_not_implemented() → SerializedNotImplemented¶ transform(input: Iterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → Iterator[Output]¶ Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated. classmethod update_forward_refs(**localns: Any) → None¶ Try to update ForwardRefs on fields based on this Model, globalns and localns. classmethod validate(value: Any) → Model¶ with_config(config: Optional[RunnableConfig] = None, **kwargs: Any) → Runnable[Input, Output]¶ Bind config to a Runnable, returning a new Runnable. with_fallbacks(fallbacks: ~typing.Sequence[~langchain.schema.runnable.base.Runnable[~langchain.schema.runnable.utils.Input, ~langchain.schema.runnable.utils.Output]], *, exceptions_to_handle: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,)) → RunnableWithFallbacks[Input, Output]¶ with_retry(*, retry_if_exception_type: ~typing.Tuple[~typing.Type[BaseException], ...] = (<class 'Exception'>,), wait_exponential_jitter: bool = True, stop_after_attempt: int = 3) → Runnable[Input, Output]¶ property InputType: TypeAlias¶ Get the input type for this runnable.
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property InputType: TypeAlias¶ Get the input type for this runnable. property OutputType: Any¶ Get the input type for this runnable. property input_schema: Type[pydantic.main.BaseModel]¶ property lc_attributes: Dict¶ List of attribute names that should be included in the serialized kwargs. These attributes must be accepted by the constructor. property lc_secrets: Dict[str, str]¶ A map of constructor argument names to secret ids. For example,{“openai_api_key”: “OPENAI_API_KEY”} property output_schema: Type[pydantic.main.BaseModel]¶ Examples using PromptLayerChatOpenAI¶ PromptLayer ChatOpenAI
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langchain.chat_models.baidu_qianfan_endpoint.convert_message_to_dict¶ langchain.chat_models.baidu_qianfan_endpoint.convert_message_to_dict(message: BaseMessage) → dict[source]¶ Examples using convert_message_to_dict¶ Twitter (via Apify)
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.baidu_qianfan_endpoint.convert_message_to_dict.html
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langchain.chat_models.fireworks.acompletion_with_retry_streaming¶ async langchain.chat_models.fireworks.acompletion_with_retry_streaming(llm: ChatFireworks, *, run_manager: Optional[AsyncCallbackManagerForLLMRun] = None, **kwargs: Any) → Any[source]¶ Use tenacity to retry the completion call for streaming.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.fireworks.acompletion_with_retry_streaming.html
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langchain.chat_models.minimax.MiniMaxChat¶ class langchain.chat_models.minimax.MiniMaxChat[source]¶ Bases: MinimaxCommon, BaseChatModel Wrapper around Minimax large language models. To use, you should have the environment variable MINIMAX_GROUP_ID and MINIMAX_API_KEY set with your API token, or pass it as a named parameter to the constructor. Example from langchain.chat_models import MiniMaxChat llm = MiniMaxChat(model_name="abab5-chat") Create a new model by parsing and validating input data from keyword arguments. Raises ValidationError if the input data cannot be parsed to form a valid model. param cache: Optional[bool] = None¶ Whether to cache the response. param callback_manager: Optional[BaseCallbackManager] = None¶ Callback manager to add to the run trace. param callbacks: Callbacks = None¶ Callbacks to add to the run trace. param max_tokens: int = 256¶ Denotes the number of tokens to predict per generation. param metadata: Optional[Dict[str, Any]] = None¶ Metadata to add to the run trace. param minimax_api_host: Optional[str] = None¶ param minimax_api_key: Optional[str] = None¶ param minimax_group_id: Optional[str] = None¶ param model: str = 'abab5.5-chat'¶ Model name to use. param model_kwargs: Dict[str, Any] [Optional]¶ Holds any model parameters valid for create call not explicitly specified. param tags: Optional[List[str]] = None¶ Tags to add to the run trace. param temperature: float = 0.7¶ A non-negative float that tunes the degree of randomness in generation. param top_p: float = 0.95¶
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.minimax.MiniMaxChat.html
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param top_p: float = 0.95¶ Total probability mass of tokens to consider at each step. param verbose: bool [Optional]¶ Whether to print out response text. __call__(messages: List[BaseMessage], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → BaseMessage¶ Call self as a function. async abatch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of abatch, which calls ainvoke N times. Subclasses should override this method if they can batch more efficiently. async agenerate(messages: List[List[BaseMessage]], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, *, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, run_name: Optional[str] = None, **kwargs: Any) → LLMResult¶ Top Level call async agenerate_prompt(prompts: List[PromptValue], stop: Optional[List[str]] = None, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None, **kwargs: Any) → LLMResult¶ Asynchronously pass a sequence of prompts and return model generations. This method should make use of batched calls for models that expose a batched API. Use this method when you want to: take advantage of batched calls, need more output from the model than just the top generated value, are building chains that are agnostic to the underlying language modeltype (e.g., pure text completion models vs chat models). Parameters
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.minimax.MiniMaxChat.html
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Parameters prompts – List of PromptValues. A PromptValue is an object that can be converted to match the format of any language model (string for pure text generation models and BaseMessages for chat models). stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. callbacks – Callbacks to pass through. Used for executing additional functionality, such as logging or streaming, throughout generation. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns An LLMResult, which contains a list of candidate Generations for each inputprompt and additional model provider-specific output. async ainvoke(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → BaseMessageChunk¶ Default implementation of ainvoke, which calls invoke in a thread pool. Subclasses should override this method if they can run asynchronously. async apredict(text: str, *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → str¶ Asynchronously pass a string to the model and return a string prediction. Use this method when calling pure text generation models and only the topcandidate generation is needed. Parameters text – String input to pass to the model. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a string. async apredict_messages(messages: List[BaseMessage], *, stop: Optional[Sequence[str]] = None, **kwargs: Any) → BaseMessage¶ Asynchronously pass messages to the model and return a message prediction.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.minimax.MiniMaxChat.html
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Asynchronously pass messages to the model and return a message prediction. Use this method when calling chat models and only the topcandidate generation is needed. Parameters messages – A sequence of chat messages corresponding to a single model input. stop – Stop words to use when generating. Model output is cut off at the first occurrence of any of these substrings. **kwargs – Arbitrary additional keyword arguments. These are usually passed to the model provider API call. Returns Top model prediction as a message. async astream(input: Union[PromptValue, str, List[BaseMessage]], config: Optional[RunnableConfig] = None, *, stop: Optional[List[str]] = None, **kwargs: Any) → AsyncIterator[BaseMessageChunk]¶ Default implementation of astream, which calls ainvoke. Subclasses should override this method if they support streaming output. async astream_log(input: Any, config: Optional[RunnableConfig] = None, *, include_names: Optional[Sequence[str]] = None, include_types: Optional[Sequence[str]] = None, include_tags: Optional[Sequence[str]] = None, exclude_names: Optional[Sequence[str]] = None, exclude_types: Optional[Sequence[str]] = None, exclude_tags: Optional[Sequence[str]] = None, **kwargs: Optional[Any]) → AsyncIterator[RunLogPatch]¶ Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state.
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.minimax.MiniMaxChat.html
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The jsonpatch ops can be applied in order to construct state. async atransform(input: AsyncIterator[Input], config: Optional[RunnableConfig] = None, **kwargs: Optional[Any]) → AsyncIterator[Output]¶ Default implementation of atransform, which buffers input and calls astream. Subclasses should override this method if they can start producing output while input is still being generated. batch(inputs: List[Input], config: Optional[Union[RunnableConfig, List[RunnableConfig]]] = None, *, return_exceptions: bool = False, **kwargs: Optional[Any]) → List[Output]¶ Default implementation of batch, which calls invoke N times. Subclasses should override this method if they can batch more efficiently. bind(**kwargs: Any) → Runnable[Input, Output]¶ Bind arguments to a Runnable, returning a new Runnable. call_as_llm(message: str, stop: Optional[List[str]] = None, **kwargs: Any) → str¶ classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model¶ Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model¶ Duplicate a model, optionally choose which fields to include, exclude and change. Parameters include – fields to include in new model exclude – fields to exclude from new model, as with values this takes precedence over include
https://api.python.langchain.com/en/latest/chat_models/langchain.chat_models.minimax.MiniMaxChat.html