Eric V. Smith <e...@trueblade.com> added the comment:
Here's a simplified reproducer:
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("-u", "--utc", choices=["-1:00"])
args = parser.parse_args()
I assume this is related to argparse guessing if an argument is a negative
number. See
https://stackoverflow.com/questions/9025204/python-argparse-issue-with-optional-arguments-which-are-negative-numbers
>From a suggestion there, note that
python test.py -u ' -1:00'
doesn't give the "expected one argument" error. I realize that doesn't solve
your problem, but it does shed some light on the issue.
I suspect this can't be fixed without breaking other usages of argparse.
----------
components: +Library (Lib) -Parser
nosy: +eric.smith, paul.j3 -lys.nikolaou, pablogsal
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<https://bugs.python.org/issue47002>
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