The current documentation only mentions heap[0] as the smallest element in the
beginning, and not in any of the methods' docs. There's no method to access the
minimal element without popping it, and the documentation of nsmallest is
confusing because it may suggest that min() is the way to go for n==1.
default

Patch by Demian Brecht.

handle exceptions raised by an iterator.  Patch by Alon Diamant and Davin
Potts.

Original patch by Demian Brecht.

Patch by mattip.

Patch by Sayan Chowdhury.

Patch by Florian Finkernagel and Davin Potts.

Issue #23576: Avoid stalling in SSL reads when EOF has been reached in the SSL layer but the underlying connection hasn't been closed.

These functions are not documented but used in third-party code.

See
de Gouw, Stijn and Rot, Jurriaan and de Boer, Frank S and Bubel, Richard and Hähnle, Reiner
"OpenJDK’s java.utils.Collection.sort() is broken: The good, the bad and the worst case"

set to non inheritable

closing the window.

particular accepts writable memoryview).

conditional group references are used in lookbehind assertions in regular
expressions.

consumed too much memory and raised SystemError or MemoryError.
Original patch by Aleksi Torhamo.

flush() was not called in close() if closefd=False.