class Sample():
	#This is Constructor
	def __init__(self):
		self.x = 10

	def modify(self):
	    self.x = self.x + 1;	

s1 = Sample()
s2 = Sample()
print 'x in s1',s1.x;
print 'x in s2',s2.x;
s1.modify()
print 'x in s1',s1.x;
print 'x in s2',s2.x;

		