How Can Sum Two Nested List In This Situation

Given list a, b a=[[[1.1,-2.1], [-0.6,4.2]], [[3.9,1.3], [-1.3,1.2]]] b=[[-1.1,4.3], [-1.4,2.4]] If I just want to sum the list [[1.1,-2.1],[-0.6,4.2]] in the list

Solution 1:

Use:

import numpy as npc= (np.array(a[0]) + b[0]).tolist()

Output:

>>> c
[[0.0, 2.1999999999999997], [-1.7000000000000002, 8.5]]

Update Using for loop:

 c = []
 for row in a[0]: 
     c.append([])
     for x, y in zip(row, b[0]):
         c[-1].append(x+y)

Update: Using list comprehension

c = [[x + y for x,y in zip(row, b[0])] for row in a[0]]

Output:

>>> c
[[0.0, 2.1999999999999997], [-1.7000000000000002, 8.5]]