What's New in Python 3.13 (copyediting)

[AA-Turner]

Documentation

This is a meta-issue to capture PRs for copyedits to What's New in Python 3.13.

Other meta-issues:

• 3.14: What's New in Python 3.14 (copyediting) #123299
• 3.12: What's New in Python 3.12 (copyediting) #109190

Linked PRs

• gh-109975: What's new in 3.13: Add PEP 594 to release highlights #110993
• gh-109975: What's new in 3.13: Add module headers to removals and sort #110994
• gh-109975: What's new in 3.13: 3.13+ has a greater share of full support #110997
• gh-109975: Copyedit "What's New in Python 3.13" #114401
• gh-109975: Copyedit "What's New in Python 3.13" #117902
• gh-109975: Document crypt_r as a possible replacement of crypt #118439
• gh-109975: Update 'What's New in Python 3.13' for beta #118694
• gh-109975: Make a rough editorial pass over What's New #118711
• gh-109975: What's New in Python 3.13: telnetlib projects not found #119958
• [3.13] gh-109975: What's New in Python 3.13: fix broken link for telnetlib alternative (GH-119958) #119959
• GH-109975: Copyedit 3.13 What's New: Release Highlights #122958
• [3.13] GH-109975: Copyedit 3.13 What's New: Release Highlights (GH-122958) #122971
• GH-109975: Copyedit 3.13 What's New: New Features #122990
• [3.13] GH-109975: Copyedit 3.13 What's New: New Features (GH-122990) #123032
• GH-109975: Mention PyPy somewhat more prominently in What's New in Python 3.13 #123063
• GH-109975: Copyedit 3.13 What's New: Other Language Changes #123086
• [3.13] GH-109975: Copyedit 3.13 What's New: Other Language Changes (GH-123086) #123101
• GH-109975: Copyedit 3.13 What's New: Improved Modules #123132
• gh-109975: Copyedit the 3.13 What's New #123150
• [3.13] gh-109975: Copyedit What's New in Python 3.13 (GH-123150) #123164
• [3.13] GH-109975: Copyedit 3.13 What's New: Improved Modules (GH-123132) #123292
• GH-109975: Copyedit 3.13 What's New: Optimizations #123301
• [3.13] GH-109975: Copyedit 3.13 What's New: Optimizations (GH-123301) #123308
• gh-109975: Fix a typo in What's New in Python 3.13 #123393
• [3.13] gh-109975: Fix a typo in What's New in Python 3.13 (GH-123393) #123396
• GH-109975: Copyedit 3.13 What's New: Removals #123529
• [3.13] GH-109975: Copyedit 3.13 What's New: Removals (GH-123529) #123552
• gh-109975: Remove dangling angle bracket from 3.13.rst #123589
• [3.13] gh-109975: Remove dangling angle bracket from 3.13.rst (GH-123589) #123590
• gh-109975: Add links to py-free-threading.github.io #123776
• [3.13] gh-109975: Add links to py-free-threading.github.io (GH-123776) #123794
• GH-109975: Copyedit 3.13 What's New: New Deprecations #123845
• [3.13] GH-109975: Copyedit 3.13 What's New: New Deprecations (GH-123845) #124135
• GH-109975: Copyedit 3.13 What's New: C API #124313
• [3.13] GH-109975: Copyedit 3.13 What's New: C API (GH-124313) #124334
• GH-109975: Copyedit 3.13 What's New: Copyedit C API deprecations pending removal #124336
• GH-109975: Copyedit 3.13 What's New: Porting to Python 3.13 #124341
• GH-109975: Copyedit 3.13 What's New: Build Changes #124343
• GH-109975: Copyedit 3.13 What's New: Trivia #124348
• [3.13] GH-109975: Copyedit 3.13 What's New: Porting to Python 3.13 (GH-124341) #124357
• [3.13] GH-109975: Copyedit 3.13 What's New: Build Changes (GH-124343) #124360
• [3.13] GH-109975: Copyedit 3.13 What's New: Copyedit C API deprecations pending removal (GH-124336) #124362
• [3.12] GH-109975: Copyedit 3.13 What's New: Copyedit C API deprecations pending removal (GH-124336) #124365
• [3.13] GH-109975: Copyedit 3.13 What's New: Trivia (GH-124348) #124376
• GH-109975: Copyedit 3.13 What's New: Note delayed expected release date for Python 3.13.0 #124827
• [3.13] GH-109975: Copyedit 3.13 What's New: Note delayed expected release date for Python 3.13.0 (GH-124827) #124828
• GH-109975: Copyedit 3.13 What's New: Link to installing free-threaded binaries on macOS #124831
• gh-109975: nntplib is not on PyPI so propose pynntp #124830
• [3.13] GH-109975: Copyedit 3.13 What's New: Link to installing free-threaded binaries on macOS (GH-124831) #124833
• GH-109975: Copyedit 3.13 What's New: Remove references to the incremental GC #124947
• [3.13] gh-109975: Suggest pynntp instead of nntplib (GH-124830) #124966
• GH-109975: Announce final release in What's New in Python 3.13 #125007
• [3.13] GH-109975: Announce final release in What's New in Python 3.13 (GH-125007) #125033
• [3.12] GH-109975: Announce final release in What's New in Python 3.13 (GH-125007) #125034
• gh-109975: Add list of 3.13 removed library replacements #127816
• [3.13] gh-109975: Add list of 3.13 removed library replacements (GH-127816) #129242

[AA-Turner]

https://docs.python.org/dev/whatsnew/3.13.html#porting-to-python-3-13

The old trashcan macros Py_TRASHCAN_SAFE_BEGIN and Py_TRASHCAN_SAFE_END were removed. They should be replaced by the new macros Py_TRASHCAN_BEGIN and Py_TRASHCAN_END.

This is a C API change, it should be moved to: C API Changes > Porting to Python 3.13: https://docs.python.org/dev/whatsnew/3.13.html#id5

Originally posted by @vstinner in #109190 (comment)

[hugovk]

Let's call out the increased share in full support from 3.13 onwards in PEP 602:

python/peps@619e4e2

[hugovk]

Py_TRASHCAN_* - moved in #110994.

PEP 602 - added in #110997.