Python Design Patterns - Prototype

import copy

class Cloneclass:

   type = none
   value = none

   def clone(self):
      pass

   def getType(self):
      return self.type

   def getValue(self):
      return self.value

class Type1(Cloneclass):

   def __init__(self, no):
      self.type = "Type1"
      self.value = no

   def clone(self):
      return copy.copy(self)

class Type2(Cloneclass):

   """ Concrete Cloneclass. """

   def __init__(self, no):
      self.type = "Type2"
      self.value = no

   def clone(self):
      return copy.copy(self)

class ObjectGroup:

   """ Manages prototypes.
   It encapsulates prototype
   initialization and then allows instatiation
   of the classes from these prototypes.
   """

   object1 = none
   object2 = none
   object3 = none
   object4 = none

   @staticmethod
   def initialize():
      ObjectGroup.object1 = Type1(1)
      ObjectGroup.object2 = Type1(2)
      ObjectGroup.object3 = Type2(1)
      ObjectGroup.object4 = Type2(2)

   @staticmethod
   def getObject1():
      return ObjectGroup.object1.clone()

   @staticmethod
   def getObject2():
      return ObjectGroup.object2.clone()

   @staticmethod
   def getObject3():
      return ObjectGroup.object3.clone()

   @staticmethod
   def getObject4():
      return ObjectGroup.object4.clone()

def main():
   ObjectGroup.initialize()
   
   obj = ObjectGroup.getObject1()
   print("%s: %s" % (obj.getType(), obj.getValue()))
   
   obj = ObjectGroup.getObject2()
   print("%s: %s" % (obj.getType(), obj.getValue()))
   
   obj = ObjectGroup.getObject3()
   print("%s: %s" % (obj.getType(), obj.getValue()))
   
   obj = ObjectGroup.getObject4()
   print("%s: %s" % (obj.getType(), obj.getValue()))

if __name__ == "__main__":
   main()