jrpfinch wrote:
> Thank you this is very helpful. The only thing I now don't understand
> is why it is calling __coerce__. self.wrapped and other are both
> lists.
Yes, but in "a + [5]", *a* is a myListSub object -- it's not a list! So
__coerce__ is called to try and get a common type...
Try this in myList...
# We could check the type of 'other' to determine what we return
here....
# At the moment, we return a list, whose + operator, requires another
list so this works
# and gives an exception if it's not for us
def __coerce__(self,other):
return self.wrapped, other
#
def __add__(self,other):
return self + other
hth
Jon.
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