On Sat, May 28, 2011 at 14:40, Michael Katz <michaeladamk...@yahoo.com> wrote: > Thanks for the explanation. It sounds like Python needs __rcontains__.
Not really. For the mathematical operators, there are good ways for the operands to "know" what types they can deal with and which they can't. For mylist.__contains__(x), it should treat all objects exactly the same: check if it equals any item that it contains. There is no way for it to say, "Oh, I don't know how to deal with this type, so I'll pass it over to x.__contains__()". A function call is the best place for this operation, not syntax. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
