Automatic class registration using metaclass

meta.py

#!/usr/bin/python

reg = {}

class metaclass_register(type):
	def __init__(cls, name, bases, nmspc):
		super(metaclass_register, cls).__init__(name, bases, nmspc)
		reg[name] = cls

class class1(object):
	__metaclass__ = metaclass_register

	def foo(self):
		print "foo"

class class2(class1):

	def foo(self):
		print "foo2"

print reg

t = reg['class1']()
t.foo()

t = reg['class2']()
t.foo()