pyfactory.py

# -*- coding: utf-8 -*-
"""
Created on Mon Jul 17 13:13:26 2017

@author: agoswami
"""

class Car(object):
    @staticmethod
    def factory(type):
        if type == "Racecar": 
            return Racecar()
        if type == "Van": 
            return Van()
        assert 0, "Bad car creation: " + type
 
#    factory = staticmethod(factory)
 
class Racecar(Car):
    def drive(self): print("Racecar driving.")
 
class Van(Car):
    def drive(self): print("Van driving.")
 
# Create object using factory.
obj = Car.factory("Racecar")
obj.drive()

obj = Car.factory("Van")
obj.drive()

obj = Car.factory("Racecar")
obj.drive()