Dennis Sweeney <sweeney.dennis...@gmail.com> added the comment:
Correction correction: returning zero preserves the invariant below.
from math import gcd as GCD
from functools import reduce
from itertools import starmap, chain
def gcd(*args):
return reduce(GCD, args, 0)
iterables = [[10, 20, 30],
[],
[0, 0, 0],
[5],
[-15, -10000000]]
a = gcd(*chain.from_iterable(iterables))
b = gcd(*starmap(gcd, iterables))
assert a == b == 5
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue39648>
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