# bugstack for Python

Python

# bugstack for Python

Auto-fix AttributeError, KeyError, ImportError, and NoneType errors in Django, Flask, and FastAPI.

## What Python Errors bugstack Fixes

-   **AttributeError: 'NoneType' object has no attribute** — accessing attributes on None return values
-   **KeyError** — accessing missing dictionary keys without .get()
-   **ImportError / ModuleNotFoundError** — incorrect import paths or missing modules
-   **TypeError: argument of type 'NoneType'** — passing None where a value is expected
-   **ValueError** — invalid function arguments and type conversions
-   **Django ORM errors** — DoesNotExist, MultipleObjectsReturned, field lookup failures

## Install the SDK

Add bugstack to your Python project:

```
pip install bugstack
```

Then initialize it in your application entry point:

```
import bugstack

bugstack.init(
    api_key=os.environ["BUGSTACK_API_KEY"]
)
```

## Example Fix

bugstack detects an AttributeError caused by calling a method on a None return value and writes a surgical fix:

Before (broken)

```
def get_user_email(user_id):
    user = db.session.get(User, user_id)
    return user.email

# Runtime error when user is None:
# AttributeError: 'NoneType' object
#   has no attribute 'email'
```

After (fixed by bugstack)

```
def get_user_email(user_id):
    user = db.session.get(User, user_id)
    if user is None:
        return None
    return user.email
```

## Related Error Guides

-   [Fix AttributeError: 'NoneType' in Django](/errors/attributeerror-nonetype-django)
-   [Fix KeyError in Flask Request Handling](/errors/keyerror-flask-request)
-   [Fix ImportError in Flask](/errors/importerror-flask)
-   [Fix TypeError in FastAPI Validation](/errors/typeerror-fastapi-validation)
-   [Fix RecursionError in Django](/errors/recursion-error-django)
-   [Fix Database Connection Error in Django](/errors/database-connection-django)

[Full installation guide with config reference →](/docs/installation/python)

## Stop fixing Python errors manually

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