John M. Gabriele wrote:
> David Hirschfield wrote:
>
>> Nothing's wrong with python's oop inheritance, you just need to know
>> that the parent class' __init__ is not automatically called from a
>> subclass' __init__. Just change your code to do that step, and you'll
>> be fine:
>>
>> class Parent( object ):
>> def __init__( self ):
>> self.x = 9
>>
>>
>> class Child( Parent ):
>> def __init__( self ):
>> super(Child,self).__init__()
>> print "Inside Child.__init__()"
>>
>> -David
>>
>
> How does it help that Parent.__init__ gets called? That call simply
> would create a temporary Parent object, right? I don't see how it
> should help (even though it *does* indeed work).
Sorry -- that question I wrote looks a little incomplete: what I meant
to ask was, how does it help this code to work:
---- code ----
#!/usr/bin/python
class Parent( object ):
def __init__( self ):
self.x = 9
print "Inside Parent.__init__()"
def wash_dishes( self ):
print "Inside Parent.wash_dishes(), washing", self.x, "dishes."
class Child( Parent ):
def __init__( self ):
super( Child, self ).__init__()
print "Inside Child.__init__()"
c = Child()
c.wash_dishes()
---- /code ----
since the x instance attribute created during the
super( Child, self ).__init__() call is just part of what looks to be
a temporary Parent instance.
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