Python

ModuleNotFoundError: No module named 'xxx'

ModuleNotFoundError

Python cannot find the requested module. Usually caused by wrong environment, missing install, or incorrect import path.

Common Causes

Package not installed (pip install missing)
Using wrong Python interpreter (system vs venv)
Import path doesn't match package structure
PYTHONPATH not set correctly

Fixes

1. Install the package
```
pip install xxx
```

2. Use a virtual environment

python -m venv .venv
source .venv/bin/activate  # or .venv\Scripts\activate on Windows
pip install -r requirements.txt

3. Install in editable mode for local packages
```
pip install -e .
```

Still not fixed?

• Search the exact error message on Stack Overflow or GitHub Issues
• Check the official docs for the language or tool
• Ensure your versions (Node, Python, npm, Docker) are up to date
• Try in a minimal reproduction (new project, single file)

Related Errors

Cannot Find Module FileNotFoundError

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All Errors

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