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
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
from threading import _timer class 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
t = looptimer(120, fun_timer) t.start()
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