Write a Python Program to Convert 2D Array to 1D Array by Row and column wise.

import numpy as np

a=[]
a1=[]
row = int(input("enter row size"))
column = int(input("enter column size"))
for i in range(0, row):
    for j in range(0, column):
        a.append(int(input("enter number")))
    a1.append(a)
    a=[]
arr = np.array(a1)
print(arr)
#conversion of 2D Array to 1D array(ROW-WISE)
a=[]
a1=[]
for i in range(0,row):
    for j in range(0, column):
        a.append(arr[i][j])
a1=np.array(a)
print("Row-wise")
print(a1)
#conversion of 2D Array to 1D array(COLUMN-WISE)
a2=[]
arr2=[]
for i in range(0, column):
    for j in range(0, row):
            arr2.append(arr[j][i])
       # print(j,i)
a2=np.array(arr2)
print("Column-wise")
print(a2)

Output