python_class_factory.py

# Author: Aaron Phalen | Twitter: @aaron_phalen | Email: [email protected]
# Example of python class factory

# Dynamically create classes
Class1 = type("Class1", (), {"name": "class 1"}) 
Class2 = type("Class2", (), {"name": "class 2"})

# create factory class
class SampleClass(object):
      """class factory"""
      
      @staticmethod
      def factory(n):
          """factory method by integer name"""
          n = int(n)
          if n == 1:
            instance = Class1()
          elif n == 2:
            instnace = Class2()
          return instance

# access class factory instances           
for instance in [SampleClass.factory(x) for x in xrange(1, 3)]:
    print instance, instance.name
    
# Output
# <class '__main__.Class1'>, class 1 
# <class '__main__.Class2'>, class 2