Re: [Python-ideas] Reduce/fold and scan with generator expressions and comprehensions

On Oct 23, 2016 9:12 AM, "Danilo J. S. Bellini" <danilo.bellini@gmail.com> wrote: Actually, itertools.accumulate and functools.reduce have their parameters reversed, and accumulate doesn't have a "start" parameter. def accumulate2(fn=operator.add, it, start=None): if start is not None: it = iterations.chain([start], it) return itertools.accumulate(it, fn) I would have preferred this signature to start with, but it's easy to wrap.