Bug? If not, how to work around it?
mday at apple.com
Wed Aug 6 23:58:02 CEST 2003
In article <u8m2jvsus3om8r96ggnej9s7u3iecv3e29 at 4ax.com>, Gonçalo
Rodrigues <op73418 at mail.telepac.pt> wrote:
> >>> class Test(object):
> ... def __init__(self, obj):
> ... self.__obj = obj
> ... def __getattr__(self, name):
> ... return getattr(self.__obj, name)
> >>> a = Test()
> >>> a.__iter__
> <method-wrapper object at 0x0112CF30>
> >>> iter(a)
> Traceback (most recent call last):
> File "<interactive input>", line 1, in ?
> TypeError: iteration over non-sequence
> Is this a bug? If not, how to code Test such that iter sees the
> __iter__ of the underlying object?
I'm guessing that iter() is looking for an __iter__ attribute without
going through __getattr__ to find it. So, I tried adding the following
method to the Test class:
but that returned the following error:
TypeError: iter() returned non-iterator of type 'method-wrapper'
I changed the __iter__ method to the following, and it seems to do what
As to whether this is a bug, I don't know.
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