class ScopeRules:
    x = 66
    __y = 6
    def __init__(self):
      self.number =17 
    def getY(self):
      return self.__y

if __name__ == "__main__":
   d = ScopeRules()
   e = ScopeRules()
   print d.number
   print d.x
   print d.getY()
   e.x = 88
   print d.x
   print e.x
   # this doesn't work: print x
   # this doesn't work: print d.__y
   print d.getY()