paul j3 added the comment:
Does this work for
help='choices: %(choices)s'
Without setting up my own test case, I'm guessing that the problem is with an
empty help string. `help=''` should be ok, but the test handle that probably
occurs earlier.
Choices, empty or not, are included earlier in the help line, as well as usage.
So there isn't real need to include them in the user defined part of the help
line.
Still, there are other bug issues regarding the formatting of choices. That
part needs refinement to handle very long lists of choices, as well as ones
that don't fit the usual 'list' format.
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nosy: +paul.j3
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<http://bugs.python.org/issue24444>
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