delay, counter): while counter: if exitFlag: threadName.exit() time.sleep(del...
As soon as user enter the or input the word ‘exit’, the if condition becomes true whichif user_input.lower() == ‘exit’:then the code of the if the condition is executed, the first line of code isprint(“Exiting the program.”)which prints a message on the terminal “Exiting the...
ifname=='Alice':print('Hi, Alice.')else:print('Hello, stranger.') 图2-3 显示了这段代码的流程图。 图2-3:一个else语句的流程图 elif语句 虽然只有if或else子句中的一个会执行,但您可能希望执行多个可能子句中的一个。elif语句是一个else if语句,总是跟在一个if或另一个elif语句之后。它提供了另...
# Python program killing# thread using daemonimportthreadingimporttimeimportsysdeffunc():whileTrue:time.sleep(0.5)print('Thread alive, but it will die on program termination')t1=threading.Thread(target=func)t1.daemon=Truet1.start()time.sleep(2)sys.exit() 注意,一旦主程序退出,线程t1将被杀死。
Without daemon threads, you'd have to keep track of them, and tell them to exit, before your program can completely quit. By setting them as daemon threads, you can let them run and forget about them, and when your program quits, any daemon threads are killed automatically. ...
p.daemon:默认值为False,如果设为True,代表p为后台运行的守护进程,当p的父进程终止时,p也随之终止,并且设定为True后,p不能创建自己的新进程,必须在p.start()之前设置p.name:进程的名称p.pid:进程的pidp.exitcode:进程在运行时为None、如果为–N,表示被信号N结束(了解即可)p.authkey:进程的身份验证键,默认...
thread.exit() #当func返回时,线程同样会结束 #启动一个线程,线程立即开始运行#这个方法与thread.start_new_thread()等价#第一个参数是方法,第二个参数是方法的参数 thread.start_new(func, ()) #方法没有参数时需要传入空tuple #创建一个锁(LockType,不能直接实例化)#这个方法与thread.allocate_lock()等价...
# If this program was run (instead of imported), run the game: if __name__ == '__main__': try: main() except KeyboardInterrupt: sys.exit() # When Ctrl-C is pressed, end the program. 在输入源代码并运行几次之后,尝试对其进行实验性的修改。标有(!)的注释对你可以做的小改变有建议。
You can give an extra condition filter to do "conditional watchpoints". Pass a function func(obj) which returns True if you want to trigger the callback to when of watcha = 0 watch(a, when=lambda x: x > 0) a = -1 # Won't trigger a = 1 # Trigger variable vs object...
...iflen(target)>1:sub=target[1]myclass="%sCLI"%sub.capitalize()eliftarget[0]=='ansible':sub='adhoc'myclass='AdHocCLI'else:raiseAnsibleError("Unknown Ansible alias: %s"%me)try:mycli=getattr(__import__("ansible.cli.%s"%sub,fromlist=[myclass]),myclass)...cli=mycli(args)exit_cod...