"Python 3.14.5 final is the fifth maintenance release of 3.14, containing around 154 bugfixes, build improvements and documentation changes since 3.14.4. https://www.python.org/downloads/release/python-3145/ Garbage collector Notably, the garbage collector (GC) has changed in Python 3.14.5. The incremental garbage collector shipped in Python 3.14.0-3.14.4 has been reverted back to the generational garbage collector from 3.13, due to a number of of significant memory pressure in production environments."
"Tcl/Tk 9 on macOS The official macOS installer has been updated to use Tcl/Tk 9.0.3 instead of 8.6.17. Major new features of the 3.14 series, compared to 3.13 Some of the major new features and changes in Python 3.14 are: New features : A new module compression.zstd providing support for the Zstandard compression algorithm. : except and except* expressions may now omit the brackets."
": and support for color in , , and CLIs. are now supported by the uuid module, and generation of versions 3-5 are up to 40% faster. : Disallow return/break/continue that exit a finally block. For more details on the changes to Python 3.14, see What's new in Python 3.14 . Build changes Removals and new deprecations"
"Python install manager The installer we offer for Windows is being replaced by our new install manager, which can be installed from the Windows Store or from its download page. See our documentation for more information. The JSON file available for download contains the list of all the installable packages available as part of this release, including file URLs and hashes, but is not required to install the latest release. The traditional installer will remain available throughout the 3.14 and 3.15 releases."
Python 3.14.5 is the fifth maintenance release of Python 3.14, providing around 154 bug fixes, build improvements, and documentation updates since 3.14.4. The garbage collector behavior changed: the incremental garbage collector introduced in Python 3.14.0–3.14.4 was reverted back to the generational garbage collector from Python 3.13 due to significant memory pressure observed in production environments. On macOS, the official installer was updated to use Tcl/Tk 9.0.3 instead of 8.6.17. Python 3.14 also includes new capabilities such as a compression.zstd module for Zstandard, relaxed exception syntax, CLI color support, faster UUID version 3–5 generation, and restrictions on exiting finally blocks. Windows installation is moving toward a new install manager with package listings and hashes, while the traditional installer remains available.
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