[issue21314] Document '/' in signatures

[Benjamin Peterson]

Benjamin Peterson added the comment:

The original bug (junk in various doc strings) has been fixed, but I think the positional argument "/" syntax still needs docs. It's a little tricky because "/" is not actually valid syntax; it's just for documentation signatures.

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nosy: +benjamin.peterson

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21314>
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