[issue37330] open(): remove 'U' mode, deprecated since Python 3.3

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:


New changeset 942f7a2dea2e95a0fa848329565c0d0288d92e47 by Victor Stinner in branch 'master':
bpo-39674: Revert "bpo-37330: open() no longer accept 'U' in file mode (GH-16959)" (GH-18767)
https://github.com/python/cpython/commit/942f7a2dea2e95a0fa848329565c0d0288d92e47


----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37330>
_______________________________________