Subprocess: Don't close all file descriptors by default (close_fds=False)

Python 3.11: “Zero cost” exception handling

Issue 38980: Compile libpython with -fno-semantic-interposition

8 year old bug fixed in Python 3.8 (IDLE)

Optimize namedtuple creation

Guido accepts PEP 628 to add tau to math constants

Python bug: Can assign [] = (), but not () = []