[issue9616] copy.deepcopy() copying pointers from a dict/dict/list, should copy values

[Martin v. Löwis]

Martin v. Löwis <martin at v.loewis.de> added the comment:

Numbers are immutable, and hence don't need to be copied. In fact, it is impossible to create two int object that both have the value 4, but are different objects:

py> 2+2 is 3+1
True

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<http://bugs.python.org/issue9616>
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