Is there a zip-like function that pads to longest length in Python?

Question

Is there a built-in function that works like zip() but that will pad the results so that the length of the resultant list is the length of the longest input rather

Answer 1

non itertools Python 3 solution:

def zip_longest(*lists):
    def g(l):
        for item in l:
            yield item
        while True:
            yield None
    gens = [g(l) for l in lists]    
    for _ in range(max(map(len, lists))):
        yield tuple(next(g) for g in gens)