[issue18111] Add a default argument to min & max

[Doug Hellmann]

Doug Hellmann added the comment:

+1 on adding this

I found today via @dabeaz's cookbook that iter() has a sentinel-detection use case. Having one in min/max seems *far* more obviously useful. It's also consistent with quite a few methods on builtin types where we provide a way to deal with unknown data safely by having a default instead of catching exceptions directly.

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nosy: +doughellmann

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18111>
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