klasssample.py

class NothingToDo(object) :
    """ This is simple class which do nothing """
    a = 1
    b = 2

namespace = vars()               

def SomeThing(name,bases=(),**kw) :
    klass = namespace[name] = type(name,tuple(bases)+(NothingToDo,),kw)
    return klass

SomeThing("Number0",number=0)

SomeThing("Number1",number=1)

SomeThing("DictNumber2",(dict,),number=3)