Fuzzyman wrote:
Iterators are available in python 2.2
class enumerate:
def __init__(self, inlist):
self.inlist = inlist
self.index = 0
def next(self):
if self.index >= len(self.inlist): raise StopIteration
thisone = self.inlist[self.index]
self.index += 1
return self.index-1, thisone
def __iter__(self):
return self
A simpler version that works with any iterable (not just sequences):
py> class enumerate(object):
... def __init__(self, iterable):
... self._next = iter(iterable).next
... self._index = -1
... def __iter__(self):
... return self
... def next(self):
... self._index += 1
... return self._index, self._next()
...
py> enumerate('abcde')
<__main__.enumerate object at 0x011627F0>
py> list(enumerate('abcde'))
[(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd'), (4, 'e')]
STeVe
--
http://mail.python.org/mailman/listinfo/python-list
