https://datawhalechina.github.io/llm-cookbook/#/C4/2.%20%E6%96%87%E6%A1%A3%E5%8A%A0%E8%BD%BD%20Document%20Loading
上面链接给出的[加载PDF文档代码有误
from langchain.document_loaders import PyPDFLoader
应该改为
from langchain_community.document_loaders import PyPDFLoader
https://datawhalechina.github.io/llm-cookbook/#/C4/2.%20%E6%96%87%E6%A1%A3%E5%8A%A0%E8%BD%BD%20Document%20Loading
上面链接给出的[加载PDF文档代码有误
from langchain.document_loaders import PyPDFLoader应该改为
from langchain_community.document_loaders import PyPDFLoader