On Aug 2, 6:52 pm, Andreas Pfrengle <a.pfren...@gmail.com> wrote: > I'm trying to define a subclass of int called int1. An int1-object > shall behave exactly like an int-object, with the only difference that > the displayed value shall be value + 1 (it will be used to display > array indices starting at 1 instead of 0). Right now I have: > > class int1(int): > def __str__(self): > return int.__str__(self + 1) > > However, if I calculate with int1 and int- (or other number) objects, > the result is always coerced to an int (or other number object), e.g: > a = int1(5) > b = 5 > print a # "6" > print a+b #"10" > > How can I tell int1 to be the "default integer object"? Do I need to > overload *every* mathematical operation method of int, or is there an > easier way?
I had a similar problem a few years ago, and couldn't find a solution then. The thread from back then may shed some light on your problem. http://groups.google.com/group/comp.lang.python/browse_thread/thread/10cfe2affc265ac/2ad03b121c1c6489 -- http://mail.python.org/mailman/listinfo/python-list
