myclass.py

class Myclass:
  def __init__(self,x):
    self.ozellik = x
  def foomethodu(self,x,y):
    self.x = x
    self.y = y

nesne1 = Myclass(2)
nesne1.foomethodu(1,8)
nesne2 = Myclass(3)
nesne2.foomethodu(2,9)
print "nesne1 x : ", nesne1.x
print "nesne1 y : ", nesne1.y
print "nesne1 ozellik : ", nesne1.ozellik
print "nesne2 x : ", nesne2.x
print "nesne2 y : ", nesne2.y
print "nesne2 ozellik : ", nesne2.ozellik

def bar():
  print nesne1.x + nesne2.x

bar()