class Userarr():
	Arr={}
	s=0
	def __init__(self,x,y):
		self.Arr[x]=y


a=  Userarr(5,6)
b = Userarr(0,1)
a.s=5
b.s=6

print a.Arr , a.s
print b.Arr , b.s

 
{0: 1, 5: 6} 5
{0: 1, 5: 6} 6

class Userarr:
    def __init__(self,x,y):
        self.Arr = {}
        self.Arr[x] = y

a = Userarr(1,5)
b = Userarr(6,3)

print a.Arr
print b.Arr

{1:5}
{6:3}