[New-bugs-announce] [issue16712] collections.abc.Sequence should not provide __reversed__

INADA Naoki report at bugs.python.org
Tue Dec 18 13:56:01 CET 2012

New submission from INADA Naoki:

>  Objects that support the sequence protocol should only provide __reversed__() if they can provide an implementation that is more efficient than the one provided by reversed().

collections.abc.Sequence can't provide more efficient method.
It only make `reversed()` slower.

components: Library (Lib)
messages: 177688
nosy: naoki
priority: normal
severity: normal
status: open
title: collections.abc.Sequence should not provide __reversed__
versions: Python 3.4, Python 3.5

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