Question

How to loop over Lists of lists in Python

Answer 1

list_of_lists = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
for one_list in list_of_lists:
    for i in one_list:
        print(i)


'''
run:

1
2
3
4
5
6
7
8
9

'''

 

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Answer 2

list_of_lists = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
for one_list in list_of_lists:
    for i in one_list:
        print(i, end=" ")


'''
run:

1 2 3 4 5 6 7 8 9

'''

 

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Answer 3

list_of_lists = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
for one_list in list_of_lists:
    for i in one_list:
        print(i, end=" ")
    print()

'''
run:

1 2 3
4 5 6
7 8 9

'''

 

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