Question

How to create a list of X elements and link each element to another list of Y elements in Python

Answer 1

row = 3
col = 4
lst = [0] * row

for i in range(row):
    lst[i] = [0] * col

print(lst)


'''
run:

[[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]]

'''

 

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Answer 2

row = 3
col = 4
lst = [0] * row

for i in range(row):
    lst[i] = [0] * col

lst[0][0] = 1
lst[1][1] = 2
lst[2][2] = 3

print(lst)


'''
run:

[[1, 0, 0, 0], [0, 2, 0, 0], [0, 0, 3, 0]]

'''

 

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Answer 3

row = 3
col = 4
lst = [0] * row

for i in range(row):
    lst[i] = [0] * col

lst[0][0] = 1
lst[1][1] = 2
lst[2][2] = 3

for row in lst:
    for col in row:
        print(col, end=" ")
    print(end="\n")


'''
run:

1 0 0 0
0 2 0 0
0 0 3 0

'''

 

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