Thanks, that's helpful. I guess what you _really_ want there is a duck-typed "tell me whether this value is integral and if so give me the corresponding Python int", but that's not currently easily available, so I suppose x == int(x) is the next-best thing. Possibly the "right" way from the point of view of PEP 3141 is to be testing x == math.trunc(x) instead and asking for typing.SupportsTrunc, but it seems to me that __trunc__ never did really take off the way it was intended to.

tl;dr: I agree it would make sense to add __int__ to fractions.Fraction for 3.11.