Numpy: Reshape an array

# Import library
import numpy as np

# Create an array
x = np.array([[1,2,3,4],
             [10,20,30,40],
             [100,200,300,400]])

# Reshape
y = x.reshape(6,2)

# Output
print('Original array:\n', x, '\n', 'Shape:',x.shape,'\n')
print('Reshaped array:\n', y, '\n', 'Shape:',y.shape,'\n')

Original array:
 [[  1   2   3   4]
 [ 10  20  30  40]
 [100 200 300 400]] 
 Shape: (3, 4) 

Reshaped array:
 [[  1   2]
 [  3   4]
 [ 10  20]
 [ 30  40]
 [100 200]
 [300 400]] 
 Shape: (6, 2)