class-test.py

#!/usr/bin/python
#-*- encoding:utf-8 -*-

class ClassTest:
    FOO = 'foo'
    __bar = 'secret!'
    def __init__(self, **args):
        self.__dict = {}
        self.__dict[ClassTest.FOO] = args[ClassTest.FOO]
        self.fill_dict(ClassTest.FOO, **args)
    def fill_dict(self,key,**args):
        self.__dict[key] = args[key]
    def printout(self):
        print "%s is %s" % (ClassTest.FOO, self.__dict[ClassTest.FOO])
        print ClassTest.__bar

if __name__ == "__main__":
    d = {ClassTest.FOO:ClassTest.FOO}
    test = ClassTest(**d)
    test.printout()
    print ClassTest.FOO
    print ClassTest.__bar