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Cpython v3.13.3

Cpython: v3.13.3 Release

Release date:
April 8, 2025
Previous version:
v3.13.2 (released February 4, 2025)
Magnitude:
9,255 Diff Delta
Contributors:
59 total committers
Data confidence:
Commits:
219 impacting commits

310 Features Released with v3.13.3

[3.13] GH-127953: Make line number lookup O(1) regardless of the size of the code object
#129127
gh-127667: refactor and improve `_hashopenssl.c` error branches
#131145
gh-128770: raise warnings as errors in test suite - except for test_socket which still logs warnings, and internal test warnings that are now logged
#128973
GH-121970: Extract ``pydoc_topics`` into a new extension
#129116
[3.13] gh-131531: Add `android.py package` command (GH-131532)
#131960
gh-118201: Simplify conv_confname
#126089
gh-131277: allow `EnvironmentVarGuard` to unset more than one environment variable at once
#131280
gh-129603: Don't segfault if sqlite3.Row description is None
#129604
[3.13] Update manpage environment variables and command line arguments (GH-129623)
#130078
gh-131507: Refactor screen and cursor position calculations
#131547
[3.13] gh-71339: Use new assertion methods in test_import and test_importlib (GH-129052)
#129123
[3.13] gh-128133: use relaxed atomics for hash of bytes (GH-128412)
#130022
[3.13] gh-128714: Fix function object races in `__annotate__`, `__annotations__` and `__type_params__` in free-threading build (GH-129016)
#129729
[3.13] gh-128364: Fix flaky `test_concurrent_futures.test_wait` tests (gh-130742)
#130922
[3.13] gh-130940: Remove PyConfig.use_system_logger
#131129
[3.13] gh-128308: pass `**kwargs` to asyncio task_factory (GH-128768)
#130084
gh-130959: Reject whitespace in fractions, in pure Python `fromisoformat()`
#130962
[3.12] gh-111178: Fix getsockaddrarg() undefined behavior (GH-131668) (GH-131977)
#131979
gh-111178: Fix getsockaddrarg() undefined behavior
#131668
[3.13] gh-128770: raise warnings as errors in test suite - except for test_s…
#131802
[3.13] gh-131020: py.exe launcher does not correctly detect a BOM when searching for the shebang (GH-131021)
#131047
[3.13] gh-130151: Fix reference leaks in `_hashlib.hmac_{new,digest}` (GH-130152)
#130491
[3.13] gh-117174: Add a new route in linecache to fetch interactive source code (GH-117500)
#131060
gh-126037: fix UAF in `xml.etree.ElementTree.Element.find*` when concurrent mutations happen
#127964
[3.13] Convert change detection to a Python script (GH-129627)
#130367
[3.13] gh-129200: Add locking to the iOS testbed startup sequence. (GH-130564)
#130657
[3.13] CI: Use ImageOS (ubuntu24) instead of runner.os (Linux) in cache keys (GH-130200)
#130222
[3.13] gh-110206: Fix multiprocessing test_notify_all (GH-130933)
#130950
[3.13] gh-130737: Fix multiprocessing test_notify() (GH-130797)
#130802
[3.13] gh-128231: Use `runcode()` return value for failing early (GH-129488)
#130513

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Top Contributors in v3.13.3

serhiy-storchaka
miss-islington
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