Pablo Acosta added the comment: Understood and agreed. My bad too for not reading the documentation more carefully. Thank you for the detailed explanation.
Pablo > On Jun 11, 2014, at 2:52 PM, Tim Peters <rep...@bugs.python.org> wrote: > > > Tim Peters added the comment: > > @pacosta, if Mark's answer is too abstract, here's a complete session showing > that the result you got for gcd(2.7, 107.3) is in fact exactly correct: > >>>> import fractions >>>> f1 = fractions.Fraction(2.7) >>>> f2 = fractions.Fraction(107.3) >>>> f1 > Fraction(3039929748475085, 1125899906842624) # the true value of "2.7" >>>> f2 > Fraction(7550566250263347, 70368744177664) # the true value of "107.3" >>>> fractions.gcd(f1, f2) # computed exactly with rational arithmetic > Fraction(1, 1125899906842624) >>>> float(_) > 8.881784197001252e-16 > > But this will be surprising to most people, and probably useless to all > people. For that reason, passing non-integers to gcd() is simply a Bad Idea > ;-) > > ---------- > > _______________________________________ > Python tracker <rep...@bugs.python.org> > <http://bugs.python.org/issue21712> > _______________________________________ ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21712> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
