[docs] [issue16988] argparse: PARSER option for nargs not documented

[Jeff Knupp]

Jeff Knupp added the comment:

This is not a bug.

The 'PARSER' nargs choice is an implementation detail as a way to handle subparsers. The parser needs to know that the first value should be handled, but everything that follows will be handled by the subparser.

By using a subparser, you're effectively using 'PARSER', but it wouldn't make sense to allow 'PARSER' to be set directly as it only makes sense when used in conjunction with a subparser.

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nosy: +jeffknupp

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<http://bugs.python.org/issue16988>
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