[issue22778] list's in-place add doesn't return NotImplemented when appropriate

[Raymond Hettinger]

Raymond Hettinger added the comment:

Please don't replicate existing issues.

Also, this behavior for lists is long-standing, tested, and designed by Guido.  More than a little code relies on this behavior.

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assignee:  -> rhettinger
nosy: +rhettinger
resolution:  -> not a bug
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22778>
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