"Francis Girard" <[EMAIL PROTECTED]> wrote in message
an "iterator" doesn't have to support the "__iter__" method
Terry Reedy wrote:
Yes it does. iter(iterator) is iterator is part of the iterater protocol
for the very reason you noticed...
But, notwithstanding the docs, it is not essential that
iter(iterator) is iterator
>>> class A(object):
... def __iter__(self):
... return AnIterator()
...
...
>>> class AnIterator(object): # an iterator that copies itself
... def next(self):
... return "Something"
... def __iter__(self):
... return AnIterator()
...
>>> a=A()
>>> i = iter(a)
...
>>> i.next()
'Something'
>>> j = iter(i)
>>> j.next()
'Something'
>>> i is j
False
>>>
Michael
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