[issue28197] range.index mismatch with documentation

[Vedran Čačić]

Vedran Čačić added the comment:

Yes, I agree these are useless _if you know you're dealing with range_. However, if you have a Sequence, it would be very useful not to have range be a special case.

Of course, one solution is to have a default .index implementation in the Sequence ABC itself, but still I'd argue that range can implement the 3-arg .index much better than generic Sequence.

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<http://bugs.python.org/issue28197>
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