Python 裝飾器的詳細介紹

import time

def timer(parameter):

    def outer_wrapper(func):

        def wrapper(*args, **kwargs):
            if parameter == 'task1':
                start = time.time()
                func(*args, **kwargs)
                stop = time.time()
                print("the task1 run time is :", stop - start)
            elif parameter == 'task2':
                start = time.time()
                func(*args, **kwargs)
                stop = time.time()
                print("the task2 run time is :", stop - start)

        return wrapper

    return outer_wrapper

@timer(parameter='task1')
def task1():
    time.sleep(2)
    print("in the task1")

@timer(parameter='task2')
def task2():
    time.sleep(2)
    print("in the task2")

task1()
task2()

詳情請看：http://lib.csdn.net/article/python/62942