找不到模块错误：“langchain.chains.question_answering”

Question

我正在尝试使用 langchian 编写文档聊天机器人。我首先使用安装了以下内容：

*pip install langchain langchain-openai pypdf openai chromadb tiktoken docx2txt*

Then I started importing required libraries that I got this error: 
*Module Not Found Error: no module named "langchain.chains.question_answering" was found*
after running below code:

从 langchain.chains.question_asnwering 导入 load_qa_chain

Do I need to install anything else?
Please help!

I tried to install it separately using below code:

pip 安装 langchain.chains.question_answering

but the Terminal responsed: 
[enter image description here](https://i.stack.imgur.com/XXPr1.png)

Answer 1

当您导入 load_qa_chain 时，您犯了一个拼写错误。

❌ 错误的进口声明

from langchain.chains.question_asnwering import load_qa_chain

✅ 正确的进口声明

from langchain.chains.question_answering import load_qa_chain

请按照文档此处