[issue6874] sequence method .count() and .index() shoud be in immutable sequence method list.

[s7v7nislands]

New submission from s7v7nislands <s7v7nislands at gmail.com>:

In document 6.6.4. Mutable Sequence Types says:
The following operations are defined on mutable sequence types:
s.count(x) 	return number of i‘s for which s[i] == x 	 
s.index(x[, i[, j]]) 	return smallest k such that s[k] == x and i <= k
< j 	(4)

here, s.count() and s.index() maybe should in immutable sequence types
operations list.

----------
assignee: georg.brandl
components: Documentation
messages: 92471
nosy: georg.brandl, s7v7nislands
severity: normal
status: open
title: sequence method  .count() and .index() shoud be in immutable sequence method list.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue6874>
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