François Durand <fradurand...@gmail.com> added the comment: As of now, fractions.Fraction.__bool__ is implemented as: ``return a._numerator != 0``. However, this does not necessary return a bool (which would be desired). In particular, when the numerator is a numpy integer, this returns a numpy bool instead. Another solution would be to implement fractions.Fraction.__bool__ as: ``return bool(a._numerator)``. What do you think?
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