一、线程创建方法
1. 普通创建
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import threading def run(name): for i in range ( 3 ): print (name) if __name__ = = '__main__' : t1 = threading.Thread(target = run, args = ( "t1" ,)) t2 = threading.Thread(target = run, args = ( "t2" ,)) t1.start() t2.start() - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - t1 t2 t2 t1 t2 t1 |
2. 自定义线程类
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import threading class MyThread(threading.Thread): def __init__( self , name): super (MyThread, self ).__init__() self .name = name def run( self ): for i in range ( 3 ): print ( self .name) if __name__ = = "__main__" : t1 = MyThread( "t1" ) t2 = MyThread( "t2" ) t1.start() t2.start() |
二、线程的使用
1.守护线程
子线程会随着主线程的结束而结束
t = threading.Thread(target=run, args=("t1",))
t.setDaemon(True) # 把子进程设置为守护线程,必须在start()之前设置
t.start()
2.主线程等待子线程结束
t = threading.Thread(target=run, args=("t1",))
t.setDaemon(True)
t.join() # 设置主线程等待子线程结束
t.start()
3.互斥锁
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from threading import Thread,Lock n = 10 def run(): global n locker.acquire() n - = 1 locker.release() if __name__ = = '__main__' : locker = Lock() t1 = Thread(target = run) t2 = Thread(target = run) t1.start() t2.start() |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://www.cnblogs.com/LMIx/p/12678351.html