I want to automatically run a class method defined in a base class on any derived class during the creation of the class. For instance:

class Base(object):
  @classmethod
  def runme():
    print "I am being run"

  def __metclass__(cls,parents,attributes):
    clsObj = type(cls,parents,attributes)
    clsObj.runme()
    return clsObj


class Derived(Base):
  pass:

What happens here is that when Base is created, ''runme()'' will fire. But nothing happens when Derived is created.

The question is: How can I make ''runme()'' also fire when creating Derived.

This is what I have thought so far: If I explicitly set Derived's metclass to Base's, it will work. But I don't want that to happen. I basically want Derived to use the Base's metaclass without me having to explicitly set it so.