# How to Add a Docstring to Your Code

This is useful if you need to automatically generate documentation strings for code.

**Prompt**

````txt
You are a Python expert. For the given Python function, add mypy typing and a docstring.
Return the Python function only. 

```py
def add(a,b): 
    return a + b 
```
````

**Output**

```python PYTHON
def add(a: int, b: int) -> int:
    """
    This function takes two integers 'a' and 'b' and returns their sum.

    Parameters:
    a (int): The first integer.
    b (int): The second integer.

    Returns:
    int: The sum of 'a' and 'b'.
    """
    return a + b
```

**API Request**

````python PYTHON
import cohere

co = cohere.Client(api_key="Your API key")
response = co.chat(
    model="command-a-03-2025",
    message="""You are a Python expert. For the given Python function, add mypy typing and a docstring. Return the Python function only.

```py
def add(a,b): 
    return a + b 
```
""",
)
print(response)
````

## Related pages

- [Changelog](../changelog.md)
- [Cohere](../index.md)
- [Cohere API](./cohere-api-index.md)
- [Cohere Labs](./cohere-labs-index.md)
- [Cohere Platform](./cohere-platform-index.md)
- [Cookbooks](./cookbooks-index.md)
- [Deployment Options](./deployment-options-index.md)
- [Embeddings (Vectors, Search, Retrieval)](./embeddings-vectors-search-retrieval-index.md)
- [Get Started](./get-started-index.md)
- [Going to Production](./going-to-production-index.md)

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