[issue23086] Add start and stop parameters to the Sequence.index() ABC mixin method

[Devin Jeanpierre]

Devin Jeanpierre added the comment:

I take it back, I don't want to copy what the list type does, because it's wrong: http://bugs.python.org/issue23204

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23086>
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