How to take a mode of list of lists, through each list?-CodePudding

I have a Python list of lists:

a = [[1,2,3], [1,3,3], [0,3,0]]

I want to take a mode of it, in this way:

mode of zeroth position of each list: 1, 1, 0 = 1
mode of first position of each list: 2, 3, 3 = 3
mode of second position of each list: 3, 3, 0 = 3

So, the output will be:

output = [1, 3, 3]   # expected output

Can anyone tell me, how to take such mode?

I tried using statistics library: statistics.mode(a), but it is giving me this error: TypeError: unhashable type: 'list'. Do you have any other method?

CodePudding user response：

Use zip to iterate in parallel over the lists:

from statistics import mode

a = [[1,2,3], [1,3,3], [0,3,0]]

res = [mode(x) for x in zip(*a)]
print(res)

Output

[1, 3, 3]