initialize a class
myang
myang at clarku.edu
Sat Mar 27 18:43:24 EST 2004
Hi,
I am trying to construct a 'point' instance with two different methods (see
the following codes). Why the second one can't work? It's strange, since
'self' refers to the newly created object, and the '=' assign a initialized
instance to it.
>>> class Point:
... x = 0.0
... y = 0.0
...
>>> def initializePoint(a,b):
... p = Point()
... p.x = a
... p.y = b
... return p
...
>>> class Ppoint(Point):
... def __init__(self,a,b):
... self = initializePoint(a,b)
...
>>> p = initializePoint(1.0,2.0)
>>> p.x
1.0
>>> p.y
2.0
>>> p = Ppoint(1.0,2.0)
>>> p.x
0.0
>>> p.y
0.0
Acutally, what I want to do is like the code above: I have a huge class in a
module, and a function to initialize instances of this class. But I want the
instance of the class to be initialized when it's created. How can I fulfill
such a task? Thanks!
Regards,
Yang
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