On 30 dic, 06:24, Riccardo Murri <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] writes: > > >> (Pydb) p graph == self.base[27] > >> True > >> (Pydb) p graph in self.base > >> True > >> (Pydb) self.base.index(graph) > >> *** ValueError: list.index(x): x not in list
> > Looking at the source for both methods, they only > > use the __eq__ operator, but there is a slight difference: while one > > evaluates list[i]==x, the other reverses the operands. If your __eq__ > > is not reflexive, that could explain the difference. > > That was indeed the reason: a bug in Graph.__eq__ broke reflexivity in > certain cases. Combined with some other WTF bugs I've found at work, lately I feel more like a detective than a software developer :) -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
