[issue37880] For argparse add_argument with action='store_const', const should default to None.

[Vinay Sajip]

Vinay Sajip <vinay_sajip at yahoo.co.uk> added the comment:


New changeset 0ad173249d287794d53e6a1fe2d58bb2adee2276 by Jack DeVries in branch 'main':
bpo-37880: for argparse add_argument with action='store_const', const now defaults to None. (GH-26707)
https://github.com/python/cpython/commit/0ad173249d287794d53e6a1fe2d58bb2adee2276


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