重构父类方法和返回值

今天用面向对象写了一段代码,用创建的类重构父类的方法,实现函数锁能实现的功能:代码如下

 1 from os import getpid
 2 from time import sleep
 3 from multiprocessing import Process
 4 
 5 
 6 class MyProcess(Process):
 7 
 8     def __init__(self, args):
 9         super(MyProcess, self).__init__()
10         self.args = args
11 
12     def run(self):
13         print('Process ID is %s' % getpid())
14         print('Process %s has been executed ' % self.args)
15 
16     def start(self):
17         print('Process %s will be executed ' % self.args)
18         super().start()
19 
20     def terminate(self):
21         super().terminate()
22 
23     def join(self, timeout=None):
24         super().join()
25 
26     def is_alive(self):
27         super().is_alive()
28 
29 
30 if __name__ == '__main__':
31     process_list = []
32     for i in range(10):
33         p = MyProcess(i)
34         p.start()
35         print(p.is_alive())
36         process_list.append(p)
37     for p in process_list:
38         print(p.is_alive())
39         print('There will terminated process %s' % p)
40         p.terminate()
41         sleep(0.2)      # 这里不延时0.2而直接打印的话,下边的is_alive会显示True
42         print(p.is_alive())
43         p.join()
44         print(p.is_alive())

重构父类方法