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Optimize contextlib.contextmanager to use for loops instead of next

performancePerformance or resource usagePerformance or resource usage

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

Status: Open.

#151903 In python/cpython;

· brandtbucher opened on Jun 22, 2026

marshal.loads() crashes on a back-referenced dict when an allocation fails (3.15 regression)

Status: Open.

#151895 In python/cpython;

· tonghuaroot opened on Jun 22, 2026

concurrent.interpreters: Interpreter.call() crashes when the result fails to unpickle in the caller

Status: Open.

#151892 In python/cpython;

· tonghuaroot opened on Jun 22, 2026

Support more photo image options in tkinter.PhotoImage methods

Status: Open.

#151890 In python/cpython;

· serhiy-storchaka opened on Jun 21, 2026

Add tkinter PhotoImage.redither method

Status: Open.

#151888 In python/cpython;

· serhiy-storchaka opened on Jun 21, 2026

Add tkinter wrappers for the tk appname, tk useinputmethods and tk caret commands

Status: Open.

#151886 In python/cpython;

· serhiy-storchaka opened on Jun 21, 2026

Add tkinter wrappers for Menu postcascade and the tk scaling and tk inactive commands

Status: Open.

#151881 In python/cpython;

· serhiy-storchaka opened on Jun 21, 2026

Add tkinter Entry and Spinbox validate methods

Status: Open.

#151878 In python/cpython;

· serhiy-storchaka opened on Jun 21, 2026

Add tkinter Canvas methods rotate and rchars

Status: Open.

#151876 In python/cpython;

· serhiy-storchaka opened on Jun 21, 2026

Add tkinter wrappers for the wm stackorder, wm iconbadge and winfo isdark commands

Status: Open.

#151874 In python/cpython;

· serhiy-storchaka opened on Jun 21, 2026

inittab fails on initfunc which creates modules with PyModule_FromSlotsAndSpec

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#151868 In python/cpython;

· davidhewitt opened on Jun 21, 2026

Remove unneeded zlib dependency in zipfile tests

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#151866 In python/cpython;

· danny0838 opened on Jun 21, 2026