Bug report

Bug description:

This code:

importargparseparser=argparse.ArgumentParser()parser.add_argument("--broken")parser.add_argument("--working")args=parser.parse_args(["--broken=--","--working=asdf"])print(args)

prints:

$ podman run -v $(pwd):/src python:3.11.5-bookworm python /src/delim.py Namespace(broken=[], working='asdf')

The value of the--broken argument is not parsed, presumably because it is the standard end-of-argument-list value. But this does not seem expected when the value is introduced with=. Besides, in this case, the parsing does continue for subsequent args, so it was not actually treated as end of arguments.

CPython versions tested on:

3.11, 3.12

Operating systems tested on:

Linux

Linked PRs

• gh-109475: argument get the value is-- #110959
• gh-109475: Fix support of explicit option value "--" in argparse #114814
• [3.12] gh-109475: Fix support of explicit option value "--" in argparse (GH-114814) #115036
• [3.11] gh-109475: Fix support of explicit option value "--" in argparse (GH-114814) #115037