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

[SilentGhost]

SilentGhost added the comment:

I think it's worth saying that this wasn't a random choice intended to confuse beginners. Strings used represent input that is identical to the command-line input: if one wants to test it, one can just copy that string directly into the propmpt, it might be harder to reconstruct it from a list of strings.

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nosy: +SilentGhost

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<http://bugs.python.org/issue20598>
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