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December 2, 2014 08:32
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Reset Timer in Python
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from threading import Thread, Event, Timer | |
import time | |
def TimerReset(*args, **kwargs): | |
""" Global function for Timer """ | |
return _TimerReset(*args, **kwargs) | |
class _TimerReset(Thread): | |
"""Call a function after a specified number of seconds: | |
t = TimerReset(30.0, f, args=[], kwargs={}) | |
t.start() - to start the timer | |
t.reset() - to reset the timer | |
t.cancel() # stop the timer's action if it's still waiting | |
""" | |
def __init__(self, interval, function, args=[], kwargs={}): | |
Thread.__init__(self) | |
self.interval = interval | |
self.function = function | |
self.args = args | |
self.kwargs = kwargs | |
self.finished = Event() | |
self.resetted = True | |
def cancel(self): | |
"""Stop the timer if it hasn't finished yet""" | |
self.finished.set() | |
def run(self): | |
#~ print("Time: %s - timer running..." % time.asctime()) | |
while self.resetted: | |
#~ print("Time: %s - timer waiting for timeout in %.2f..." % (time.asctime(), self.interval)) | |
self.resetted = False | |
self.finished.wait(self.interval) | |
if not self.finished.isSet(): | |
self.function(*self.args, **self.kwargs) | |
self.finished.set() | |
#~ print("Time: %s - timer finished!" % time.asctime()) | |
def reset(self, interval=None): | |
""" Reset the timer """ | |
if interval: | |
#~ print("Time: %s - timer resetting to %.2f..." % (time.asctime(), interval)) | |
self.interval = interval | |
#~ else: | |
#~ print("Time: %s - timer resetting..." % time.asctime()) | |
self.resetted = True | |
self.finished.set() | |
self.finished.clear() | |
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