Thanks, and I also see what I did wrong with my __eq__ function. On 8/4/10, Huy Ton That <huyslo...@gmail.com> wrote: > These are special method names. > > View section 3.4 and below here > > http://docs.python.org/reference/datamodel.html > > On Wed, Aug 4, 2010 at 11:37 AM, Alex Hall <mehg...@gmail.com> wrote: > >> It worked, thanks. Is there a list of these functions somewhere? That >> is, the functions that map implicitly to operators or implied uses? >> For example, printing will call __str__, as will a cal to str(). What >> about math or comparison operators? I have heard of __eq__, __gt__, >> and so on, but I tried to implement one and I got an error saying that >> it required three arguments. It did, but only because the first was >> self. I put the function inside my card class: >> def __eq__(self, card1, card2): >> return(card1.rank==card2.rank) >> #end def __eq__ >> For some reason it is still looking for three arguments... >> >> >> On 8/4/10, Huy Ton That <huyslo...@gmail.com> wrote: >> > You could write __str__ function >> > >> >>>> class card(object): >> > ... def __init__(self, card1, card2): >> > ... self.card1, self.card2 = card1, card2 >> > ... def __str__(self): >> > ... return str(str(self.card1)+','+str(self.card2)) >> > ... >> >>>> a = card(0,0) >> >>>> str(a) >> > '0,0' >> > >> > On Wed, Aug 4, 2010 at 10:37 AM, Alex Hall <mehg...@gmail.com> wrote: >> > >> >> Hi all, >> >> I have a card class. A card object simply consists of a pair of >> >> numbers; 0,0 might be the ace of clubs, for example. I have a toString >> >> method in my card class. Is there a way to just say str(card) instead >> >> of card.toString()? Maybe some sort of basic, built-in function to >> >> override? TIA. Oh, what about doing the same with operators? For >> >> example, could I get the program to call my own math functions when it >> >> sees a card object in a math expression, like >> >> if(card1==card2) >> >> >> >> -- >> >> Have a great day, >> >> Alex (msg sent from GMail website) >> >> mehg...@gmail.com; http://www.facebook.com/mehgcap >> >> _______________________________________________ >> >> Tutor maillist - Tutor@python.org >> >> To unsubscribe or change subscription options: >> >> http://mail.python.org/mailman/listinfo/tutor >> >> >> > >> >> >> -- >> Have a great day, >> Alex (msg sent from GMail website) >> mehg...@gmail.com; http://www.facebook.com/mehgcap >> >
-- Have a great day, Alex (msg sent from GMail website) mehg...@gmail.com; http://www.facebook.com/mehgcap _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
