#!/usr/bin/python

class AbstractClass:#{{{

	'''
		Abstract class
	'''

	def __init__(self):#{{{

		self._check_instantiation()

	#}}}

	def _check_instantiation(self):#{{{

		'''
			Anti-instantiation trap
		'''

		if self.__class__.__name__ == 'AbstractClass':
			raise Exception('Can not instantiate abstract class AbstractClass')

	#}}}

#}}}

class ChildClass(AbstractClass):#{{{

	def __init__(self):#{{{

		pass

	#}}}

#}}}

#ac = AbstractClass() #raises an exception
cc = ChildClass()