threading 多线程

多线程类的方法

import threading,time


class MyThread(threading.Thread):
    def __init__(self,mun):
        threading.Thread.__init__(self)
        self.mun = mun

    def run(self):
        print(self.mun)
        time.sleep(2)

if __name__ == ‘__main__‘:
    t1 = MyThread(1)
    t1.start()

join等待 方法

等待多线程执行完 在执行下一个进程

import threading,time


def run(n):
    time.sleep(1)
    print(n)

t_list = []
for i in range(10):
    t = threading.Thread(target=run,args=(i,))
    t.start()
    t_list.append(t)

for i in t_list:
    i.join()

print(‘____________________‘)


一种错误的用法

def run(n):
    time.sleep(1)
    print(n)


for i in range(10):
    t = threading.Thread(target=run,args=(i,))
    t.start()
　　 t.join()



print(‘____________________‘)