python如何编写定时器
python 定时器,轮询定时器的实例python 定时器默认定时器只执行一次，第一个参数单位S，几秒后执行
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import threading def fun_timer(): print('Hello Timer!') timer = threading.Timer(1, fun_timer)timer.start() |
改成以下可以执行多次
建立loop_timer.py
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from threading import _Timerclass LoopTimer(_Timer): """Call a function after a specified number of seconds: t = LoopTi mer(30.0, f, args=[], kwargs={}) t.start() t.cancel() # stop the timer's action if it's still waiting """ def __init__(self, interval, function, args=[], kwargs={}): _Timer.__init__(self, interval, function, args, kwargs) def run(self): '''self.finished.wait(self.interval) if not self.finished.is_set(): self.function(*self.args, **self.kwargs) self.finished.set()''' while True: self.finished.wait(self.interval) if self.finished.is_set(): self.finished.set() break self.function(*self.args, **self.kwargs) |
调用
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t = LoopTimer(120, fun_timer) t.start() |
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原文链接：https://blog.csdn.net/u013378306/article/details/79024432