2026-03-18 07:47:21 -05:00
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# Python support
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## Python versions
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2026-03-18 22:03:41 -05:00
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uv has Tier 1 support for the following Python versions:
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2026-03-18 07:47:21 -05:00
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- 3.10
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- 3.11
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- 3.12
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- 3.13
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- 3.14
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2026-03-18 22:03:41 -05:00
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As with [platforms](./platforms.md), Tier 1 support can be thought of "guaranteed to work". uv is
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continuously tested against these versions.
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uv has Tier 2 support for:
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- 3.6
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- 3.7
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- 3.8
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- 3.9
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uv is "expected to work" with these versions. uv is tested against these versions, but they have
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reached their [end-of-life](https://devguide.python.org/versions/) and no longer receive security
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fixes. We do not recommend using these versions.
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uv also has Tier 2 support for pre-releases of Python 3.15.
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uv does not work with Python versions prior to 3.6.
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2026-03-18 07:47:21 -05:00
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## Python implementations
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uv has Tier 1 support for the following Python implementations:
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- CPython
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As with [platforms](./platforms.md), Tier 1 support can be thought of "guaranteed to work". uv
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supports managed installations of these implementations, and the builds are maintained by Astral.
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uv has Tier 2 support for:
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- PyPy
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- GraalPy
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2026-03-18 22:03:50 -05:00
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- Pyodide
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2026-03-18 07:47:21 -05:00
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uv is "expected to work" with these implementations. uv also supports managed installations of these
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Python implementations, but the builds are not maintained by Astral.
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uv has Tier 3 support for:
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- Pyston
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uv "should work" with these implementations, but stability may vary.
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