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Issues list
dataclass.__eq__ no longer errors on missing attributes in Python 3.13 3.13bugs and security fixes 3.14bugs and security fixes 3.15new features, bugs and security fixes stdlibPython modules in the Lib dir topic-dataclasses type-bugAn unexpected behavior, bug, or error
#134488 openedMay 22, 2025 bywillhcr
The C API needs to protect state that can be deleted by finalization 3.13bugs and security fixes 3.14bugs and security fixes 3.15new features, bugs and security fixes topic-C-API topic-free-threading topic-subinterpreters triagedThe issue has been accepted as valid by a triager.
#134307 openedMay 20, 2025 byZeroIntensity
~bool
deprecation not reported for literals 3.13 #134280 openedMay 19, 2025 bydecorator-factory
The REPL hangs under no memory on 3.13 3.13bugs and security fixes stdlibPython modules in the Lib dir topic-replRelated to the interactive shell type-bugAn unexpected behavior, bug, or error
#134163 openedMay 17, 2025 byZeroIntensity
Out-of-bounds read in integrated mimalloc (fixed upstream) 3.13bugs and security fixes 3.14bugs and security fixes 3.15new features, bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) type-bugAn unexpected behavior, bug, or error
#134070 openedMay 15, 2025 byfuhsnn
Recording and restoring the LC_NUMERIC locale setting with LC_ALL=C.UTF-8 no longer works with Python 3.13.3 3.13bugs and security fixes extension-modulesC modules in the Modules dir type-bugAn unexpected behavior, bug, or error
#133967 openedMay 13, 2025 bybouweandela
typing.get_type_hints()
raises on invalid types only if they're wrapped in a ForwardRef 3.13 #133959 openedMay 13, 2025 byJelleZijlstra
creating venv Python3.13 on CIFS mounted drive fails ENODATA 3.13bugs and security fixes stdlibPython modules in the Lib dir topic-venvRelated to the venv module type-bugAn unexpected behavior, bug, or error
#133951 openedMay 12, 2025 bymycroftw
Pickled files with pathlib.Path cannot be loaded in py >= 3.13 3.13bugs and security fixes 3.14bugs and security fixes 3.15new features, bugs and security fixes stdlibPython modules in the Lib dir topic-pathlib type-bugAn unexpected behavior, bug, or error
#133789 openedMay 9, 2025 bykushaangupta
Use-after-free inonly security fixes 3.10only security fixes 3.11only security fixes 3.12only security fixes 3.13bugs and security fixes 3.14bugs and security fixes 3.15new features, bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) release-blocker topic-unicode type-crashA hard crash of the interpreter, possibly with a core dump type-securityA security issue
unicode_escape
decoder with error handler 3.9 #133767 openedMay 9, 2025 bysethmlarson
Pipe inheritance broken on Windows since 3.13 3.13bugs and security fixes 3.14bugs and security fixes OS-windows type-bugAn unexpected behavior, bug, or error
#133506 openedMay 6, 2025 byschlamar
Leak test of test_descr fails Base2 != Base 3.13bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) type-bugAn unexpected behavior, bug, or error
#133122 openedApr 29, 2025 bynascheme
REPL: AttributeError: moduleonly security fixes 3.13bugs and security fixes 3.14bugs and security fixes stdlibPython modules in the Lib dir topic-multiprocessing type-bugAn unexpected behavior, bug, or error
__mp_main__
has no attributeis_prime
inProcessPoolExecutor
example 3.12 #132898 openedApr 25, 2025 bywenming21
Report of Open Redirect Vulnerability in Python 3.9.19 - Utilizing Simple HTTP 3.9only security fixes 3.10only security fixes 3.11only security fixes 3.12only security fixes 3.13bugs and security fixes 3.14bugs and security fixes pendingThe issue will be closed if no feedback is provided stdlibPython modules in the Lib dir type-bugAn unexpected behavior, bug, or error type-securityA security issue
#132826 openedApr 23, 2025 byhnagashimauu
PyEval_SetProfileAllThreads is racy under free-threading 3.13bugs and security fixes 3.14bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) topic-free-threading type-bugAn unexpected behavior, bug, or error
#132817 openedApr 22, 2025 byhawkinsp
smtplib: missing case in handling 421 response in sendmail 3.13bugs and security fixes 3.14bugs and security fixes stdlibPython modules in the Lib dir type-bugAn unexpected behavior, bug, or error
#132796 openedApr 22, 2025 bycodeZeilen
Potential Integer Overflow in mark_stacks function 3.13bugs and security fixes 3.14bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) type-bugAn unexpected behavior, bug, or error
#132771 openedApr 21, 2025 byrialbat
Argument Clinic: c_default does not work with bool and char converters 3.13bugs and security fixes 3.14bugs and security fixes topic-argument-clinic type-bugAn unexpected behavior, bug, or error
#132753 openedApr 20, 2025 byserhiy-storchaka
Runaway recursion on 3.13 and higher for _PY_FRAME_GENERAL 3.13bugs and security fixes 3.14bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) type-bugAn unexpected behavior, bug, or error
#132744 openedApr 20, 2025 byFidget-Spinner
Enumonly security fixes 3.13bugs and security fixes release-blocker stdlibPython modules in the Lib dir type-bugAn unexpected behavior, bug, or error
_missing_
function changes__contains__
behaviour 3.12 #132684 openedApr 18, 2025 byartur-sl
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