scott wrote:
> hi people,
>
> can someone tell me, how to use a class like that* (or "simulate" more
> than 1 constructor) :
> #--
> class myPointClass:
> def __init__(self, x=0, y=0):
> self.x = x
> self.y = y
> def __init__(self, x=0, y=0, z=0):
> self.__init__(self, x, y)
> self.z = z
> #--
>
You might try:
#--
class myPointClass:
def __init__(self, x=0, y=0, z=None):
self.x = x
self.y = y
if z is not None:
self.z = z
#--
You could also turn __init__ into a dispatch fuction:
#--
class myPointClass:
def __init__(self, *args):
if len(args) <= 2:
self.__init_two(*args)
if len(args) == 3:
self.__init_three(*args)
def __init_two(self, x=0, y=0):
self.x = x
self.y = y
def __init_three(self, x=0, y=0, z=0):
self.__init_two(x, y)
self.z = z
#--
But I would definitely recommend looking at your algorithm to determine
if there is a better way to do what you want, that doesn't require an
initilizer with two different signatures.
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