from threading import Timer
import time


class ResettableTimer(object):
    def __init__(self, interval, function):
        self.interval = interval
        self.function = function
        self.timer = Timer(self.interval, self.function)

    def run(self):
        self.timer.start()

    def reset(self):
        self.timer.cancel()
        self.timer = Timer(self.interval, self.function)
        self.timer.start()


if __name__ == '__main__':
    t = time.time()
    tim = ResettableTimer(5, lambda: print("Time's Up! Took ", time.time() - t, "seconds"))
    time.sleep(3)
    tim.reset()

import threading
import time

def hi( ):
    print('hi')
    mine.start()



class ReusableTime():
    def __init__(self, t, func):
        self._t = t
        self._func = func

    def start(self):
        self._thread = threading.Timer(self._t, self.handler)
        self._thread.start()

    def handler(self):
        self._func()


mine = ReusableTime(2, hi)
mine.start()
time.sleep(100)