FawltyDeps

FawltyDeps is a dependency checker for Python that finds undeclared and/or unused 3rd-party dependencies in your Python project. For example, it will find modules that you are importing in your code, but have forgotten to declare in your pyproject.toml or requirements.txt.

Features

• Finds undeclared dependencies: modules you are importing, but forgot to declare as dependencies.
• Finds unused dependencies: dependencies you declared, but never import.
• Supports Python code in regular files and Jupyter notebooks.
• Supports many dependency declaration formats: pyproject.toml, requirements.txt, setup.py, setup.cfg, environment.yml, and pixi.toml.
• Can be installed into your project as a development dependency, or run as an independent tool.
• Easily automated, e.g. as a pre-commit hook or as a CI action.

Why FawltyDeps?

Good dependency management is crucial for maintaining a healthy codebase and avoiding the "Works on my machine" problem. Over time, unused dependencies can accumulate, leading to bloated environments, longer installation times, and potential security risks. FawltyDeps helps keep your project installable, lean and efficient.

We invite you to join our Discord channel! It's a great place to ask questions, share your ideas, and collaborate with other users and contributors.