Prashant wrote:
> class Shape(object):
> def __init__(self, shapename):
> self.shapename = shapename
>
>
> def update(self):
> print "update"
>
> class ColoredShape(Shape):
> def __init__(self, color):
> Shape.__init__(self, color)
> self.color = color
> print 1
> print 2
> print 3
> self.update()
>
> User can sub-class 'Shape' and create custom shapes. How ever user must
> call 'self.update()' as the last argument when ever he is sub-classing
> 'Shape'. I would like to know if it's possible to call 'self.update()'
> automatically after the __init__ of sub-class is done?
I don't think so. You could however shuffle things around a bit:
class Shape(object):
def __init__(self, shapename, *args, **kw):
self.shapename = shapename
self.init(*args, **kw)
self.update()
def init(self, *args, **kw):
pass
def update(self):
print "update"
In that constellation you would override init(), not __init__():
class ColoredShape(Shape):
def init(self, color, **kw):
self.color = color
print 1
print 2
print 3
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