[issue21320] dict() allows keyword expansion with integer keys, e.g. dict(**{5:'v'})

[Raymond Hettinger]

Raymond Hettinger added the comment:

IIRC, we've only created -3 warnings for things that would be incorrectly accepted by Python 3 (such as floor division using /).   

I don't think that applies here and isn't worth monkeying with Py2.7.  It goes in the harmless nuisance category, something that affects almost no one.

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nosy: +rhettinger

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<http://bugs.python.org/issue21320>
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