New submission from Vedran Čačić:
Look at this:
>>> from collections.abc import Sequence
>>> help(Sequence.index)
index(self, value, start=0, stop=None)
S.index(value, [start, [stop]]) -> integer -- return first index of
value.
Raises ValueError if the value is not present.
>>> issubclass(range, Sequence)
True
>>> help(range.index)
index(...)
rangeobject.index(value, [start, [stop]]) -> integer -- return index of
value.
Raise ValueError if the value is not present.
So far, so good. But:
>>> range(9).index(2, 1, 5)
TypeError: index() takes exactly one argument (3 given)
Of course it's not essential, but the docs shouldn't lie. And if range _is_ a
Sequence, then it should have the complete interface of a Sequence. Including
start and end arguments for .index: they are optional from the point of call,
not from the point of implementation. :-)
----------
assignee: docs@python
components: Documentation, Library (Lib)
messages: 276908
nosy: docs@python, veky
priority: normal
severity: normal
status: open
title: range.index mismatch with documentation
type: behavior
versions: Python 3.5, Python 3.6
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue28197>
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