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Add env setup (#7550)

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Include setup
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Lance Martin 2023-07-11 09:48:40 -07:00 committed by GitHub
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7
docs/extras/use_cases/question_answering/index.mdx
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@ -45,7 +45,14 @@ Let's load this [blog post](https://lilianweng.github.io/posts/2023-06-23-agent/
We have a QA app in a few lines of code.
Set enviorment varaibles and get packages:
```python
pip install openai
pip install chromadb
export OPENAI_API_KEY="..."
```
Run:
```python
from langchain.document_loaders import WebBaseLoader
from langchain.indexes import VectorstoreIndexCreator