Changes by Zacrath mrdoom...@gmail.com:
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nosy: +Zacrath
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http://bugs.python.org/issue11874
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Zacrath added the comment:
I've confirmed that this is a duplicate of issue 17890.
In case anyone needs it, a workaround is to move the mutually exclusive group
to the end of the arguments.
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New submission from Zacrath:
Executing the attached script causes an AssertionError.
Traceback (most recent call last):
File bug.py, line 18, in module
parser.format_usage()
File /usr/lib/python3.4/argparse.py, line 2318, in format_usage
return formatter.format_help()
File /usr
Zacrath added the comment:
This assert statement is only reached when the usage line is long enough that
it needs to be wrapped. Which is why the assertion does not happen when an
argument is removed.
opt_usage is being compared to this string:
[-h] [--arg2 ARG2] [--arg3 ARG3] [--arg4 ARG4
