python函数装饰器的应用流程

registry = []
 
 
def register(func):
    logging.info('[register] func -> %s', func)
    registry.append(func)
    return func
 
 
@register
def f1():
    logging.info('f1 -> %s', f1)
 
 
@register
def f2():
    logging.info('f2 -> %s', f2)
 
 
def f3():
    logging.info('f3 -> %s', f3)
 
 
def main():
    logging.info('main -> %s', main)
    logging.info('registry -> %s', registry)
    f1()
    f2()
    f3()
 
 
if __name__ == '__main__':
    main()