When rows and columns of a matrix are interchanged, the matrix is said to be transposed. In Python, a matrix is nothing but a list of lists of equal number of items. A matrix of 3 rows and 2 columns is following list object
X = [[12,7], [4 ,5], [3 ,8]]
Its transposed appearance will have 2 rows and three columns. Using nested loops this can be achieved.
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)): result[j][i] = X[i][j] for r in result: print(r)
The result will be a transposed matrix
[12, 4, 3] [7, 5, 8]