Why is there no instancemethod builtin?
George Sakkis
gsakkis at rutgers.edu
Sun Jun 19 16:17:50 EDT 2005
"John Roth" wrote:
> Unfortunately it doesn't work: getitem can be defined for
> a class that acts like a dictionary: that is, the items are
> not integers, let alone integers that extend in a strict
> sequence from 0.
This is true, but that's the current behaviour of iterators for classes
that define __getitem__ without __iter__:
class AnIterable(object):
def __init__(self, it): self._it = it
def __getitem__(self,i): return self._it[i]
>>> x = AnIterable(dict(a=1,b=2))
>>> list(x)
KeyError: 0
George
More information about the Python-list
mailing list