@sh84ahn 님의 gist 에서 comprehension을 적용하도록 변경.

zipWith.py

#  [1,2,None]
# +[2,None,4]
# +[4,3,6]
# ------------
#  [7, 5, 10]

a = [[1,2,None], [2,None,4], [4,3,6]]

def zipWith(f, d):
     b =[[0 if x is None else x for x in y] for y in d]
     return [f(x) for x in zip(*b)]
    
print(zipWith(sum, a))