print matrix in python code example

Example 1: scanning 2d array in python

If you want to take n lines of input where each line contains m space separated integers like:

1 2 3
4 5 6 
7 8 9 

a=[] // declaration 
for i in range(0,n):   //where n is the no. of lines you want 
 a.append([int(j) for j in input().split()])  // for taking m space separated integers as input

Example 2: how to input 2-d array in python

matrix = [input().split() for i in range(no_of_rows)] # if only row is given and the number of coloumn has to be decide by user
matrix= [[input() for j in range(no_of_cols)] for i in range(no_of_rows)] # if both row and coloumn has been taken as input from user

Example 3: numpy matrix in python 3

np.matrix([[1, 2], [3, 4]])

# matrix([[1, 2],
#         [3, 4]])

Example 4: how to print a matrix in python

import numpy as np
print(np.matrix(A))

Example 5: python print 2d array as table

for row in A:
    for val in row:
        print '{:4}'.format(val),
    print