相当于setInterval（）的Python吗？

Question

Python是否具有类似于JavaScript的功能setInterval()？

谢谢

Answer 1

这可能是您正在寻找的正确片段：import threadingdef set_interval(func, sec):    def func_wrapper():        set_interval(func, sec)        func()    t = threading.Timer(sec, func_wrapper)    t.start()    return t

Answer 2

这是您可以启动和停止的版本。它没有阻塞。由于没有添加执行时间错误，因此也没有毛刺（例如，对于音频间隔很短的长时间执行很重要）import time, threadingStartTime=time.time()def action() :    print('action ! -> time : {:.1f}s'.format(time.time()-StartTime))class setInterval :    def __init__(self,interval,action) :        self.interval=interval        self.action=action        self.stopEvent=threading.Event()        thread=threading.Thread(target=self.__setInterval)        thread.start()    def __setInterval(self) :        nextTime=time.time()+self.interval        while not self.stopEvent.wait(nextTime-time.time()) :            nextTime+=self.interval            self.action()    def cancel(self) :        self.stopEvent.set()# start action every 0.6sinter=setInterval(0.6,action)print('just after setInterval -> time : {:.1f}s'.format(time.time()-StartTime))# will stop interval in 5st=threading.Timer(5,inter.cancel)t.start()输出为：just after setInterval -> time : 0.0saction ! -> time : 0.6saction ! -> time : 1.2saction ! -> time : 1.8saction ! -> time : 2.4saction ! -> time : 3.0saction ! -> time : 3.6saction ! -> time : 4.2saction ! -> time : 4.8s

Answer 3

只要保持它的美观和简单即可。import threadingdef setInterval(func,time):    e = threading.Event()    while not e.wait(time):        func()def foo():    print "hello"# usingsetInterval(foo,5)# output:hellohello...编辑：此代码是非阻塞的import threadingclass ThreadJob(threading.Thread):    def __init__(self,callback,event,interval):        '''runs the callback function after interval seconds        :param callback:  callback function to invoke        :param event: external event for controlling the update operation        :param interval: time in seconds after which are required to fire the callback        :type callback: function        :type interval: int        '''        self.callback = callback        self.event = event        self.interval = interval        super(ThreadJob,self).__init__()    def run(self):        while not self.event.wait(self.interval):            self.callback()event = threading.Event()def foo():    print "hello"k = ThreadJob(foo,event,2)k.start()print "It is non-blocking"