[issue20674] Update comments in dictobject.c

[Jaysinh shukla]

Jaysinh shukla added the comment:

Agreeing with "SilentGhost". Demonstrating `hash()` example for type int using list comprehension. Review  issue20674_patch_v5.diff Thanks!

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Added file: http://bugs.python.org/file43536/issue20674_patch_v5.diff

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<http://bugs.python.org/issue20674>
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