Jan Hutař <jhu...@gmail.com> added the comment: I think there is a same issue with "nargs='+'" - if you are aware of the, please ignore me.
$ python3 --version Python 3.7.5 With "choices=...", there seems to be a problem: $ cat bbb.py #!/usr/bin/env python3 import argparse parser = argparse.ArgumentParser() parser.add_argument('choices', nargs='*', default=['a', 'b', 'c'], choices=['a', 'b', 'c']) args = parser.parse_args() print(args) $ ./bbb.py usage: bbb.py [-h] [{a,b,c} [{a,b,c} ...]] bbb.py: error: argument choices: invalid choice: ['a', 'b', 'c'] (choose from 'a', 'b', 'c') $ ./bbb.py a c Namespace(choices=['a', 'c']) but without choices it works: $ cat bbb.py #!/usr/bin/env python3 import argparse parser = argparse.ArgumentParser() parser.add_argument('choices', nargs='*', default=['a', 'b', 'c']) args = parser.parse_args() print(args) $ ./bbb.py Namespace(choices=['a', 'b', 'c']) $ ./bbb.py a c Namespace(choices=['a', 'c']) As I said, if this is a known issue, I'm sorry for the noise. ---------- nosy: +Jan Hutař _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue9625> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com