[New-bugs-announce] [issue13822] is(upper/lower/title) are not exactly correct

Benjamin Peterson report at bugs.python.org
Thu Jan 19 05:22:55 CET 2012

New submission from Benjamin Peterson <benjamin at python.org>:

The isupper() and islower() methods currently use the Lowercase and Uppercase derived properties. Technically, they should use the Changes_When_(Lowercased/Uppercased/Titlecased) and Changes_When_Casemapped derived properties to compute their results.

components: Unicode
messages: 151606
nosy: benjamin.peterson, ezio.melotti
priority: normal
severity: normal
status: open
title: is(upper/lower/title) are not exactly correct
versions: Python 3.3

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