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

[INADA Naoki]

New submission from INADA Naoki:

http://docs.python.org/3.3/reference/datamodel.html#object.__reversed__
>  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.

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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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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16712>
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