docs/reference/policies/python.md
uv has Tier 1 support for the following Python versions:
As with platforms, Tier 1 support can be thought of "guaranteed to work". uv is continuously tested against these versions.
uv has Tier 2 support for:
uv is "expected to work" with these versions. uv is tested against these versions, but they have reached their end-of-life and no longer receive security fixes. We do not recommend using these versions.
uv also has Tier 2 support for pre-releases of Python 3.15.
uv does not work with Python versions prior to 3.6.
uv has Tier 1 support for the following Python implementations:
As with platforms, Tier 1 support can be thought of "guaranteed to work". uv supports managed installations of these implementations, and the builds are maintained by Astral.
uv has Tier 2 support for:
uv is "expected to work" with these implementations. uv also supports managed installations of these Python implementations, but the builds are not maintained by Astral.
uv has Tier 3 support for:
uv "should work" with these implementations, but stability may vary.