Python

uv is the only entry point for Python work: packages, tools, virtual environments, and interpreters.

The rule that matters: nothing is ever installed into a system or user-level site-packages. Every package lives in either a project venv or a uv-managed tool venv. A system Python that has been written to is contaminated and hard to clean up, so treat the boundary as absolute rather than as a default to be overridden when convenient.

Never invoke pip, pipx, poetry, pyenv, virtualenv, or python -m venv directly.

Replacements