[issue16469] Exceptions raised by Fraction() from those raised by int()

[Mark Dickinson]

Mark Dickinson added the comment:

Certainly TypeError seems inappropriate here, and using ValueError for conversions from NaN sounds good to me.

I'm not a big fan of the OverflowError for converting infinities to an integer:  nothing's actually overflowed here.  I think that should have been ValueError, too.  So either of ValueError or OverflowError works for me there.

I'd suggest fixing this for >= 3.4 only.

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stage:  -> needs patch
versions: +Python 3.4 -Python 3.3

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