[docs] [issue20598] argparse docs: '7'.split() is confusing magic

[STINNER Victor]

STINNER Victor added the comment:

I agree that '7'.split() looks strange, an explicit list would be more obvious and simpler: ['7'].

'X --foo Y'.split() can be replaced with ['X', '--foo', 'Y'].

argparse examples:
http://docs.python.org/dev/library/argparse.html#type

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nosy: +haypo

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