Mark Dickinson <dicki...@gmail.com> added the comment:

> The warning in the dict case is especially important

It's worth noting that this warning is dependent on hash() producing the same 
values for 'equivalent' bytes and str instances.  This seems a bit fragile, and 
is something that could potentially change in the future---with bytes and str 
comparing unequal, there's no reason for the hashes to correspond.

(It might even make sense to deliberately change the hash for either  bytes or 
str so that it doesn't match the other, just to expose any bugs that rely on 
the hashes being identical.)

----------
nosy: +mark.dickinson

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue9636>
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