Hi,
I'd like to subclass array.array and implement operators like __iadd__
How can this be accomplished.
I'tried
from array import array
class Vec(array) :
def __new__(cls,Vinit) :
return array.__new__(cls,'d',Vinit)
def __init__(self,*args) :
self.N = len(self)
def __str__(self) :
out=[ "{}".format(self.__getitem__(i)) for i in range(0,self.N) ]
return ",".join(out)
def __iadd__(self,Op) :
# for i,x in enumerate(self) :
# x+= Op[i] # this doesn't update self
for i in range(0,self.N) :
(self.__getitem__(i))+= Op[i] # __getitem__ doesn't return a "reference"
(like in C++)
return self
Many thanks for a hint,
Helmut
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