from new import classobj
def connectClasses( newClassName, parentClass, childClass ):
# Create an empty shell class with the passed in parentClass
# as the parent.
DupedChildClass = classobj( newClassName, (parentClass,), {} )
# Inject the parent class in to the child as a member, in case
# the child wants to call the parent.
DupedChildClass._parentClass = parentClass
# Copy references to all the members of the child class passed in
# to the new version of the child class connected to the
# given parent class. i.e. fill in the dupedChildClass shell created
# on previous line.
for k,v in childClass.__dict__.items():
# U can't overwrite the doc string for some reason
if k != '__doc__':
setattr( DupedChildClass, k, v )
return DupedChildClass
class Person:
def sayHello( self ):
print "Hi, I am a %s." % self._getMyGender()
class Man( Person ):
def _getMyGender( self ):
return "man"
class Woman( Person ):
def _getMyGender( self ):
return "woman"
class Insecure:
def _getMyGender( self ):
return self._parentClass._getMyGender( self ) + ', if that is OK'
# Create the two new classes
InsecureMan = connectClasses( 'InsecureMan', Man, Insecure )
InsecureWoman = connectClasses( 'InsecureWoman', Woman, Insecure )
# Instantiate classes
iMan = InsecureMan()
iWoman = InsecureWoman()
man = Man()
woman = Woman()
# Test the classes
man.sayHello()
woman.sayHello()
iMan.sayHello()
iWoman.sayHello()
# Expected output
'''
Hi, I am a man.
Hi, I am a woman.
Hi, I am a man, if that is OK.
Hi, I am a woman, if that is OK.
'''
