Update main.py

main.py

@@ -7,7 +7,8 @@ from langchain.text_splitter import RecursiveCharacterTextSplitter
 from PyPDF2 import PdfReader
 from fastapi import Depends
 #在FastAPI中，Depends()函数用于声明依赖项
-
+from huggingface_hub import InferenceClient
+import numpy as np
 from langchain.chains.question_answering import load_qa_chain
 from langchain import PromptTemplate, LLMChain
 from langchain import HuggingFaceHub