Python Program to Transpose a Matrix

 # Program to transpose a matrix using a nested loop

X = [[12,7],

    [4 ,5],

    [3 ,8]]

result = [[0,0,0],

         [0,0,0]]

# iterate through rows

for i in range(len(X)):

   # iterate through columns

   for j in range(len(X[0])):

       result[j][i] = X[i][j]

for r in result:

   print(r)

Matrix Transpose using Nested List Comprehension

''' Program to transpose a matrix using list comprehension'''

X = [[12,7],

    [4 ,5],

    [3 ,8]]

result = [[X[j][i] for j in range(len(X))] for i in range(len(X[0]))]

for r in result:

   print(r)

Output

[12, 4, 3]
[7, 5, 8]