[issue24736] argparse add_mutually_exclusive_group do not print help

[Alexandre Badez]

Alexandre Badez added the comment:

@paul: thanks, I'm very surprised because the parsing work well.
It's just the display that do not.

Moreover it's not said in the documentation that you cannot nest groups.

So maybe we should update the documentation and/or improve the module ?

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<http://bugs.python.org/issue24736>
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