Cpython: v3.15.0rc3 Release

139 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

[3.15] gh-151464: exclude '<>' token from tokenize output (GH-154854) (#158189)

Authored September 25, 2026

[3.15] gh-158140: Resolve lazily imported sibling submodules independently (GH-158521) (#158613)

Authored October 2, 2026

[3.15] gh-155695: Remove resolved names from sys.lazy_modules more consistently (GH-157714) (#158607)

Authored October 2, 2026

[3.15] gh-157579: Fix race condition in the cleanup of `tempfile.TemporaryDirectory` (GH-157580) (#158431)

Authored October 2, 2026

[3.15] gh-157757: Fix to make `lazy import a.b as c` import the module `a.b` (GH-158092) (#158257)

Authored September 26, 2026

[3.15] gh-63882: Implement empty tests in test_minidom (GH-156677) (#157428)

Authored September 15, 2026

[3.15] gh-156002: Keep reading through monkey-patched zipfile decompressors (GH-157180) (GH-157268)

Authored September 15, 2026

[3.15] gh-157914: Revert "gh-135871: Reload lock internal state while spinning in `PyMutex_LockTimed` (gh-146064)" (gh-158082) (#158290)

Authored September 30, 2026

[3.15] gh-152708: Fix AST generation asymmetry for unary positive in match statements (GH-152712) (#158079)

Authored September 24, 2026

[3.15] gh-157660: Fix stale TLBC caches in _remote_debugging (GH-157732) (#158302)

Authored September 27, 2026

[3.15] gh-152907: Restore cooked output flags around the input hook in the new REPL (GH-153389) (#158112)

Authored September 24, 2026

[3.15] gh-155526: Don't check errno in abs(complex) (GH-155527) (GH-157341)

Authored September 15, 2026

[3.15] gh-156995: Fix `bytearray.take_bytes()` corrupting shared single-byte singletons (GH-156996) (#157260)

Authored September 10, 2026

[3.15] gh-156939: Fix xmlcharrefreplace() buffer overflow (GH-157109) (#157232)

Authored September 11, 2026

[3.15] gh-158051: Update testbed to support Xcode 27 (GH-158052) (#158060)

Authored September 24, 2026

[3.15] gh-156512: Fix asyncio calling connection_lost() twice from resume_writing() (GH-156657) (#157031)

Authored September 7, 2026

[3.15] gh-154470: Fix spurious ^J in pdb's colorized list command (GH-154473) (#157536)

Authored September 15, 2026

[3.15] gh-156924: Try reifying lazy imports in `ForwarRef.evaluate()` (GH-156940) (#157224)

Authored September 10, 2026

[3.15] gh-157639: Fix use-after-free when an external timer re-enters the profiler (GH-157648) (#158113)

Authored September 24, 2026

[3.15] gh-157301: Fix asyncio event loop hanging on a failed eager task start (GH-157302) (#157785)

Authored September 28, 2026

[3.15] gh-157159: improve the tabnanny usage message (GH-157160) (#157163)

Authored September 8, 2026

[3.15] gh-156126: Fix crash in -X importtime with unencodable module names (GH-156137) (#156259)

Authored September 12, 2026

[3.15] gh-157788: Fix python -m asyncio ps failing on long task names (GH-157790) (#157826)

Authored September 21, 2026

[3.15] gh-157335: Fix out-of-bounds write in mmap.mmap.__setitem__ (GH-157438) (#158026)

Authored September 28, 2026

[3.15] gh-156722, test_dtrace: Terminate tracing processes gracefully on timeout (GH-156753) (#157985)

Authored September 28, 2026

[3.15] gh-158010: Update CI to use latest OpenSSL and AWS-LC releases (GH-158412) (#158420)

Authored September 29, 2026

[3.15] gh-151179: Fix pidfd leak in asyncio _PidfdChildWatcher (GH-151186) (#157318)

Authored September 11, 2026

[3.15] gh-154335: Allow disabling terminal colors in Tachyon's `pstats_collector` module (GH-154344) (#158122)

Authored September 24, 2026

[3.15] gh-93966: Remove the syntax error highlighting in the IDLE Shell on the next statement (GH-157595) (#158057)

Authored September 28, 2026

[3.15] gh-157212: Fix _Py_ThreadId() on Windows ARM64 with MinGW (gh-157253) (#158164)

Authored September 26, 2026

[3.15] gh-158446: Reject float format precision near INT_MAX (GH-158474) (#158476)

Authored September 30, 2026

[3.15] gh-157247: Block perf trampoline activation when the main interpreter's JIT is enabled (GH-157258) (#157324)

Authored September 23, 2026

[3.15] Add separate docstring for frozendict (gh-156986) (#157018)

Authored September 6, 2026

[3.15] gh-157983: Skip test for ctypes.util.find_library when ld is mold (GH-157984) (#158008)

Authored September 24, 2026

[3.15] gh-155095: Fix docs changes builder for our custom directives (GH-155100) (#157359)

Authored September 12, 2026

[3.15] gh-157788: Fix `test_long_task_name_is_truncated` by not hardcoding main task name (GH-157911) (#157941)

Authored September 22, 2026

[3.15] gh-153227: Unpin development version of Pygments (GH-156163) (#156164)

Authored September 28, 2026

[3.15] gh-157847: Rewrite `turtle` module docs introduction (GH-157854) (#158094)

Authored September 24, 2026

[3.15] gh-152023: Update Android and Windows builds to SQLite 3.53.4 (GH-155101) (#156048)

Authored September 21, 2026

[3.15] gh-142349: Document `LazyImportType.resolve()` method (GH-156936) (#157296)

Authored September 11, 2026