__getitem__ AttributeError
Alex Martelli
aleaxit at yahoo.com
Mon Oct 30 09:44:33 EST 2000
"Jeroen Valcke" <jeroen.valcke at savaco.com> wrote in message
news:39FD86B3.E13ABF1E at savaco.com...
> In python I call a method of a selfdeclared class and I keep getting the
> error:
> H:\progs\python>python listslides.py
> Traceback (innermost last):
> File "listslides.py", line 18, in ?
> for slide in slidelist:
> AttributeError: __getitem__
>
> What am I doing wrong?
You are trying to iterate over a slidelist.Slidelist instance
in a for statement, at line 18 in listslides.py:
> for slide in slidelist:
and class Slidelist does not define a __getitem__ method,
so its instances cannot be indexed with [] nor iterated on
with for.
If I understand your intentions correctly, the __getitem__
method you may need in the Slidelist class may be one that
just delegates to the self.slidelist attribute of the
instance (you _are_ naming *quite a few* disparate things
"slidelist", here, aren't you...?), i.e.:
class Slidelist:
def __init__(self):
self.slidelist = []
def __getitem__(self, index):
return self.slidelist[index]
# etc, rest of class snipped
Alex
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