On Sun, Sep 25, 2011 at 3:31 PM, Steven D'Aprano <steve+comp.lang.pyt...@pearwood.info> wrote: >>>> 2.1 == F(21, 10) > False >
Ahh, but that may just mean that Fraction doesn't implement an == that compares with floats. >>> 2.1==float(F(21,10)) True This may be because one oughtn't to use == with floats anyway. >>> F(2.1)==F(21,10) False >>> F(2.1) Fraction(4728779608739021, 2251799813685248) That denominator is a power of 2 (2**51 as it happens), which is unsurprising for something created from an IEEE floating point value. Rounding F(21,10) off to fit into float produces this same value. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
