# langchain
LangChain 为常见应用程序提供标准接口、大量集成和端到端链

```
pip install langchain
pip install openai
```

```
template = """You are a teacher in physics for High School student. Given the text of question, it is your job to write a answer that question with example.
answer = answer_chain.run("What is the formula for Gravitational Potential Energy (GPE)?")
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```