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yaml/pyyaml

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Last release: 2025-09-25

Canonical source for PyYAML, a full-featured YAML processing framework for Python. Useful for parsing and emitting YAML, including optional LibYAML-based fast loader and dumper, and includes a comprehensive test suite.

Project status

  • Actively maintained: The canonical PyYAML GitHub repository shows recent upstream updates, with the latest push on 2025-09-25, which is within the last year of 2026-06-09.
  • Update cadence: Updates appear periodic rather than rapid, for example 2024-08-06 (6.0.2) to 2025-09-25 (6.0.3) is about 13 months, with a prior 2024-06-10 release candidate for the 6.0.2 line.

AI summary generated 2026-06-09

AI-generated from public sources. May be inaccurate. Report

Recent updates

  • 6.0.3

    2025-09-25

    Release 6.0.3 updates PyYAML to add experimental support for Python 3.14 and Python free-threading. The code diff also includes multiple build and CI workflow changes that are not mentioned in the release notes.

    Features

  • 6.0.2

    2024-08-06

    PyYAML 6.0.2 finalizes the 6.0.2rc1 line and includes stated support for Cython 3.x and Python 3.13. The code diff is small, but it also changes packaging metadata in a way that can affect which Python versions users can install.

    Features

  • 6.0.2rc1

    2024-06-10

    Release 6.0.2rc1 adds broader build and platform support, including extension builds using Cython 3.x and compatibility with Python 3.13. It also improves distribution by adding PyPI wheels for musllinux on aarch64.

    Features