On 8/19/10, Peter Otten <__pete...@web.de> wrote: > Karsten Wutzke wrote: > >> I have an object which has a list of other complex objects. How do I >> best achieve a complex "contains" comparison based on the object's >> class? In Java terms, I'm looking for an equivalent to equals(Object) >> in Python. Does a similar thing exist? Directions appreciated. > > I can't infer from your question whether you already know about > __contains__(). So there: > >>>> class Cornucopia: > ... def __contains__(self, other): > ... return True > ... >>>> c = Cornucopia() >>>> 42 in c > True >>>> "cherry pie" in c > True >>>> c in c > True You may also want to use the double equals operator; in Java, one thing I wish I could do is String s="abc"; String t="def"; if(s==t)... In Python, as I understand it, you can define this behavior.
class c(object): def __init__(self, a=1, b=2): self.a=a; self.b=b def __eq__(self, obj): if self.a==obj.a and self.b==obj.b: return True return False You can now say: obj1=c() obj2=c() print(obj1==obj2) #prints True > > -- > http://mail.python.org/mailman/listinfo/python-list > -- Have a great day, Alex (msg sent from GMail website) mehg...@gmail.com; http://www.facebook.com/mehgcap -- http://mail.python.org/mailman/listinfo/python-list
