Issues

Freeze encodings module during startup

python/cpython#161941 · opened

on Nov 13, 2026

Make print() use a single write() call

python/cpython#161934 · opened

on Nov 13, 2026

test_ssl fails with forced FIPS mode -- ssl.SSLError: [SSL] internal error (_ssl.c:1176)

python/cpython#161932 · opened

on Nov 13, 2026

7

ProcessPoolExecutor: a worker spawned on demand by submit() can die unnoticed (no BrokenProcessPool, hang) with forkserver/spawn

python/cpython#161931 · opened

on Nov 13, 2026

sys.monitoring: `async for` emits BRANCH_RIGHT when `anext` raises an exception other than StopAsyncIteration

python/cpython#161928 · opened

on Nov 13, 2026

1

`complex(x)` ignores an overridden `float` of a `float` subclass since 3.14

python/cpython#161926 · opened

on Nov 13, 2026

iconv codec: encoding names that glibc strips to nothing resolve to the locale encoding

python/cpython#161924 · opened

on Nov 13, 2026

wrong/ambiguous type descriptions for `LogRecord.exc_info`

python/cpython#161918 · opened

on Nov 13, 2026

2

Class creation with many annotated classes in one module is superlinear on 3.14 (annotationlib FORWARDREF path, suspected: module globals copied per call)

python/cpython#161912 · opened

on Nov 12, 2026

2

Fold PUSH_NULL; LOAD_CONST None into GET_AWAITABLE and GET_ANEXT

python/cpython#161875 · opened

on Nov 12, 2026

1

test_build_details.test_platform fails for 32-bit builds on a 64-bit kernel

python/cpython#161870 · opened

on Nov 12, 2026

Short, frequent GIL releases block other threads for seconds

python/cpython#161868 · opened

on Nov 12, 2026

2

Possible `NULL`-related `SystemError` when interpreter is not fully initialized

python/cpython#161863 · opened

on Nov 12, 2026

1

http client putrequest changes active continue timeout after rejected call

python/cpython#161861 · opened

on Nov 12, 2026

Free-threaded build: deque iteration and `list(deque)` take a critical section per item

python/cpython#161850 · opened

on Nov 12, 2026

Segfault compiling a class that binds `classdict` and contains a generic class

python/cpython#161849 · opened

on Nov 12, 2026

macOS "Hide" handled improperly in tkinter with Tk >= 9.0

python/cpython#161848 · opened

on Nov 12, 2026

6

_interpchannels: `ChannelID.eq` reads module state from sys.modules without a check

python/cpython#161841 · opened

on Nov 12, 2026

3

ctypes: array slice assignment replaces the value's `len` exception with a ValueError

python/cpython#161840 · opened

on Nov 12, 2026

sqlite3: exception from a collation callback is replaced by SystemError

python/cpython#161837 · opened

on Nov 12, 2026

Documented parameter names of some email.utils functions don't match the implementation

python/cpython#161816 · opened

on Nov 11, 2026

regex: Improper handling of Unicode Properties in character set 3.16a2

python/cpython#161814 · opened

on Nov 11, 2026

1

ElementTree: itertext() and tostring(method="text") lose the text of elements whose tag is a QName

python/cpython#161809 · opened

on Nov 11, 2026

1

ElementTree: invalid paths raise KeyError instead of SyntaxError, and C and Python disagree on them

python/cpython#161808 · opened

on Nov 11, 2026

1

ElementTree: empty path makes find()/findall()/findtext() raise TypeError

python/cpython#161807 · opened

on Nov 11, 2026

1

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Issues

Freeze encodings module during startup

Make print() use a single write() call

test_ssl fails with forced FIPS mode -- ssl.SSLError: [SSL] internal error (_ssl.c:1176)

ProcessPoolExecutor: a worker spawned on demand by submit() can die unnoticed (no BrokenProcessPool, hang) with forkserver/spawn

sys.monitoring: `async for` emits BRANCH_RIGHT when `anext` raises an exception other than StopAsyncIteration

`complex(x)` ignores an overridden `float` of a `float` subclass since 3.14

iconv codec: encoding names that glibc strips to nothing resolve to the locale encoding

wrong/ambiguous type descriptions for `LogRecord.exc_info`

Class creation with many annotated classes in one module is superlinear on 3.14 (annotationlib FORWARDREF path, suspected: module globals copied per call)

Fold PUSH_NULL; LOAD_CONST None into GET_AWAITABLE and GET_ANEXT

test_build_details.test_platform fails for 32-bit builds on a 64-bit kernel

Short, frequent GIL releases block other threads for seconds

Possible `NULL`-related `SystemError` when interpreter is not fully initialized

http client putrequest changes active continue timeout after rejected call

Free-threaded build: deque iteration and `list(deque)` take a critical section per item

Segfault compiling a class that binds `classdict` and contains a generic class

macOS "Hide" handled improperly in tkinter with Tk >= 9.0

_interpchannels: `ChannelID.eq` reads module state from sys.modules without a check

ctypes: array slice assignment replaces the value's `len` exception with a ValueError

sqlite3: exception from a collation callback is replaced by SystemError

Documented parameter names of some email.utils functions don't match the implementation

regex: Improper handling of Unicode Properties in character set 3.16a2

ElementTree: itertext() and tostring(method="text") lose the text of elements whose tag is a QName

ElementTree: invalid paths raise KeyError instead of SyntaxError, and C and Python disagree on them

ElementTree: empty path makes find()/findall()/findtext() raise TypeError