TG wrote:
> Obviously, there is something I didn't catch in python's inheritance.
Nope. Obviously, array.array doesn't respect the usual rules.
> from array import array
> class Vector(array):
> def __init__(self,size):
> print self.typecode
> array.__init__(self,'f')
>
>
>>>>v = Vector('c')
>
> c
>
> Here, it says the typecode is 'c' - I thought such an information was
> initalized during the array.__init__(self,'f') but obviously I was
> wrong.
>
> Maybe the typecode is defined before, during the call to __new__ method
I think this must be something along this line.
> ... But here i'm getting lost.
>
Let's see :
from array import array
class Vector(array):
def __new__(cls, size):
v = super(Vector, cls).__new__(cls, 'f')
#print "v is %s" % v
return v
def __init__(self, size):
self.size = size
v = Vector(42)
print v
HTH
--
bruno desthuilliers
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