4 examples of 'python set timer' in Python

257
def timer_cb(self, timer):
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    """Timer callback.  Update all our clocks."""
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    dt_now = datetime.utcnow().replace(tzinfo=tz.UTC)
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    self.logger.debug("timer fired. utc time is '%s'" % (str(dt_now)))
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    for clock in self.clocks.values():
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        clock.update_clock(dt_now)
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    # update clocks approx every second
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    timer.start(1.0)

85
def set(self, interval, callback, repeat=False, force=True):
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    """
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    添加timer
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    """
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    if self.timer:
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        if force:
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            # 如果已经存在，那么先要把现在的清空
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            self.clear()
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        else:
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            # 已经存在的话，就返回了
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            return
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    def callback_wrapper():
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        # 必须要确定，这次调用就是这个timer引起的
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        if self.timer == timer:
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            # 必须加这句，否则如果在callback中有clear操作，会出现GreenletExit
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            self.timer = None
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            # 不可以加 timer = None，否则会导致判断self.timer == timer 报错找不到timer
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            result = safe_call(callback)
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            if repeat and not self.timer:
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                # 之所以还要判断timer，是因为callback中可能设置了新的回调
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                self.set(interval, callback, repeat, True)
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            return result
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    self.timer = timer = gevent.spawn_later(interval, callback_wrapper)

94
async def call_timer(self, timer):
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    # delete the timer
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    query = "DELETE FROM reminders WHERE id=$1;"
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    await self.bot.pool.execute(query, timer.id)
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    # dispatch the event
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    event_name = f'{timer.event}_timer_complete'
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    self.bot.dispatch(event_name, timer)

29
def restartTimer(self):
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    self.lastTimeOnline = datetime.datetime.now().strftime("%I%M%S")