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()
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t1
t2
t2
t1
t2
t1
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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()
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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()
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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