在python里如何使用装饰器?

不知道，可能不能在装饰器跳出主函数吧

class Pizza(object):
def decoratePizza: pass
def __call__:
print "make a pizza"
class CheeryPizza(Pizza):
def decoratePiza:
print "cherry Pizza"
def __call__:
print "dec供怠垛干艹妨讹施番渐orate with what"
if __name__ == '__main__':
test = CheeryPizza
apply(test)