Python--day40--threading模块 

 1 import time
 2 from threading import Thread
 3 
 4 
 5 class MyThread(Thread):
 6     def __init__(self,arg):
 7         super().__init__()
 8         self.arg = arg
 9     def run(self):
10         time.sleep(1)
11         print(self.arg)
12 
13 t = MyThread(10)
14 t.start()

运行结果：

1，一个例子:

 1 import os
 2 import time
 3 from threading import Thread
 4 #多线程并发
 5 def func(a,b):
 6     global g
 7     g = 0
 8     n = a+b
 9     print(n,os.getpid())
10 
11 g = 100
12 t_lst = []
13 #i的值的范围是0--9
14 for i in range(10):
15     t = Thread(target=func,args=(i,5))
16     t.start()
17     t_lst.append(t)
18 for t in t_lst:t.join()
19 print(g)

运行结果：

 

posted @ 2019-01-31 17:52  莱茵河的雨季  阅读(125)  评论(0)  编辑  收藏  举报