用Python方式纵向和横向汇总列表字典

Question

dict = {1:[1,2,3,4],2:[5,5,5,3],3:[5,6,7,8]}

I have seen a pythonic way to sum each list of the dictionary, but is there a pythonic way to sum all corresponding elements of the lists in the dictionary?

E.g.:
1+5+5 are the first elements of all the lists
2+5+6 are the second elements of all the lists

Currently I am using a double for loop.

Answer 1

Since you don't really care about the order in which items are added you can just use zip on dict.values in a list comprehension:

d = {1:[1,2,3,4],2:[5,5,5,3],3:[5,6,7,8]}

print([sum(i) for i in zip(*d.values())])

Output:

[11, 13, 15, 15]