[issue29935] list and tuple index methods should accept None parameters

[Raymond Hettinger]

Raymond Hettinger added the comment:

The error message should be fixed and the API should be left alone.  A *None* value doesn't do a good jog of communicating intent.

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nosy: +rhettinger

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29935>
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