% | | : 19,3,4,7,8,9,5,3,4,71, [3,5,6,3,4,5,6,4,5,6] ] print("original matrix") for i in range(10) for j in range(10) print(a[i]], ", end="') print(" ") print("Diagonally halfs replaced") for i in range(10): for j in range(10): A[i][j]=ADIO for i in range(10): for j in range(10): print(A[i]["",end="") print(" ") Step 2 of 2:) Output: original matrix 1 2 3 4 5 6 7 8 9 0 3 5 8 2 1 738 27 6 4 3 3 2 2 8 5 7 5 7 4 2 5 2 1 5 7 8 9 9 8 9 8 9 8 8 9 8 8 7 6 5 9 7 6 5 5 9 7 5 5 7 6 5 5 3 2 4 6 2 4 6 5 3 4 2 6 2 3 9 3 4 7 8 9 5 3 4 7 3 5 6 3 4 5 6 4 5 6 Diagonally halfs replaced 1 3 6 7 9 7 5 2 9 3 3 5 4 4 8 6 5 4 3 5 6 4 3 2 9 5 7 6 46 7 4 2 5 8 9 6 5 7 3 98 98 97 5 3 8 4 7 6 5 9 7 6 5 4 9 5 5 5 7 6 5 5 3 2 5 6 2 4 6 5 3 4 2 6 3 4 9 3 4 7 8 9 5 3 4 5 3 5 6 3 4 5 6 4 5 6 For All Answers Join channel : @chegglock