Mark Dickinson added the comment: True. Though having a subclass of float that overrides as_integer_ratio seems a fairly unlikely use-case. We could add a check for subclasses of float that the denominator is a power of 2 (using the usual trick: a positive integer n is a power of 2 if and only if `n & (n-1)` is zero) and raise a suitable error otherwise.
I doubt it's worth trying to support arbitrary return values from as_integer_ratio. Note that by overriding as_integer_ratio, you're breaking its "contract": the docs say > Return a pair of integers, whose ratio is exactly equal to the original > float and with a positive denominator. and you've lost that "exactly equal". I think it's reasonably to get wrong results or an exception in that case. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26975> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
