StarWing wrote: > I had checked it for serval times. maybe it's my inattention :-(. but > what i could find the nearest thing is itertools.islice. but it can't > process negative index
A negative index -n is an abbreviation for len(sequence) - n. Since iterables in general do not have a length, islice(iterable) cannot handle the abbreviation. If you pass a sequence to islice, just un-abbreviate negative indexes. -- http://mail.python.org/mailman/listinfo/python-list
