Use of Multiple Object

[arup]

I want to create two objects of a class. Using these two objects i want to input some numbers into a list which is a member of the class. After inputting data it will display the content of the list. Simple code. But the output was not which i want. I enclosed my python code and the output. Please tell me why the program is not working. I am new programmer in Python.

class Demo:
    arr = []
    n = 0

def __init__(self,s):
    self.n=s
def fill(self):
    print("Enter elements in array ")
    for i in range(self.n):
        x=input()
        self.arr.append(x)

def show(self):
    for i in range(self.n):
        print(self.arr[i])

obj1 = Demo(5)
obj2 = Demo(3)

obj1.fill()
obj2.fill()

print("Data from first Object")
obj1.show()
print("Data from second object")
obj2.show()

Output:
Enter elements in array 
1
2
3
4
5
Enter elements in array 
6
7
8
Data from first Object
1
2
3
4
5
Data from second object
1
2
3