Question

How to multiply two 2D lists in Python

Answer 1

import numpy as np

list1 = [[1, 2, 3], [4, 5, 6]]
list2 = [[9, 0, 5], [8, 7, 1]] 

multiply = np.multiply(list1,list2)

print(multiply)



'''
run:

[[ 9  0 15]
 [32 35  6]]

'''

 

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Answer 2

list1 = [[1, 2, 3], [4, 5, 6]]
list2 = [[9, 0, 5], [8, 7, 1]] 

multiply = [[0] * 3] * 2 

for i in range(len(list1)):
    multiply[i] = [x * y for x, y in zip(list1[i], list2[i])]

print(multiply)




'''
run:

[[9, 0, 15], [32, 35, 6]] 

'''

 

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Answer 3

list1 = [[1, 2, 3], [4, 5, 6]]
list2 = [[9, 0, 5], [8, 7, 1]] 

multiply = [[0] * 3] * 2 

for i in range(len(list1)):
    multiply[i] = list(map(lambda x, y: x * y ,list1[i], list2[i]))

print(multiply)




'''
run:

[[9, 0, 15], [32, 35, 6]] 

'''

 

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