[Python-Dev] PEP 362 Third Revision (original) (raw)

Benjamin Peterson benjamin at python.org
Thu Jun 14 22:19:19 CEST 2012

2012/6/14 Ethan Furman <ethan at stoneleaf.us>:

This is no different from what we have with strings now:

--> 'aA'.islower() False --> 'aA'.isupper() False --> 'a'.islower() True --> 'A'.isupper() True We know that a string cannot be both all-upper and all-lower at the same time; likewise we know a variable cannot be both positional and kwargs.

This is much less clear cut as there's no clause in the Unicode standard saying (!islower() or !isupper()) must be true.

-- Regards, Benjamin

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