[issue3122] sys.getsizeof() gives an AttributeError for _sre objects.

[Benjamin Peterson]

Benjamin Peterson <musiccomposition at gmail.com> added the comment:

I think it would be better to give a TypeError rather than an
AttributeError for objects that don't support __sizeof__ as per other
special methods.

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nosy: +benjamin.peterson

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<http://bugs.python.org/issue3122>
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