增加PromptTemplate

custom_prompt_template.ipynb

@@ -0,0 +1,103 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from langchain.chat_models import ChatOpenAI\n",
+    "from langchain import LLMChain\n",
+    "from langchain.prompts.chat import (\n",
+    "    ChatPromptTemplate,\n",
+    "    SystemMessagePromptTemplate,\n",
+    "    HumanMessagePromptTemplate\n",
+    ")\n",
+    "\n",
+    "from langchain.schema import (\n",
+    "    AIMessage,\n",
+    "    BaseMessage,\n",
+    "    ChatGeneration,\n",
+    "    ChatMessage,\n",
+    "    ChatResult,\n",
+    "    HumanMessage,\n",
+    "    SystemMessage,\n",
+    ")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def _convert_message_to_dict(message: BaseMessage) -> dict:\n",
+    "    if isinstance(message, ChatMessage):\n",
+    "        message_dict = {\"role\": message.role, \"content\": message.content}\n",
+    "    elif isinstance(message, HumanMessage):\n",
+    "        message_dict = {\"role\": \"user\", \"content\": message.content}\n",
+    "    elif isinstance(message, AIMessage):\n",
+    "        message_dict = {\"role\": \"assistant\", \"content\": message.content}\n",
+    "    elif isinstance(message, SystemMessage):\n",
+    "        message_dict = {\"role\": \"system\", \"content\": message.content}\n",
+    "    else:\n",
+    "        raise ValueError(f\"Got unknown type {message}\")\n",
+    "    if \"name\" in message.additional_kwargs:\n",
+    "        message_dict[\"name\"] = message.additional_kwargs[\"name\"]\n",
+    "    return message_dict"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[SystemMessage(content='你是一名翻译助手。把中文 翻译为 英语。', additional_kwargs={}), HumanMessage(content='我想请假', additional_kwargs={}, example=False)]\n",
+      "[{'role': 'system', 'content': '你是一名翻译助手。把中文 翻译为 英语。'}, {'role': 'user', 'content': '我想请假'}]\n"
+     ]
+    }
+   ],
+   "source": [
+    "\n",
+    "template = \"你是一名翻译助手。把{input_language} 翻译为 {output_language}。\"\n",
+    "system_message_prompt = SystemMessagePromptTemplate.from_template(template)\n",
+    "\n",
+    "human_template = \"{text}\"\n",
+    "human_message_prompt = HumanMessagePromptTemplate.from_template(human_template)\n",
+    "\n",
+    "# 这里是使用chat请求，返回BaseMessage。\n",
+    "chat_prompt_template = ChatPromptTemplate.from_messages([system_message_prompt, human_message_prompt])\n",
+    "messages = chat_prompt_template.format_prompt(input_language=\"中文\", output_language=\"英语\", text=\"我想请假\").to_messages()\n",
+    "print(messages)\n",
+    "message_dicts = [_convert_message_to_dict(m) for m in messages]\n",
+    "print(message_dicts)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "base",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.10.10"
+  },
+  "orig_nbformat": 4
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}