def start(self, seconds=<NUM_LIT>):
if self.state is TimerState.stopped:<EOL><INDENT>self.compare = time.time() + abs(seconds)<EOL>self.state = TimerState.running<EOL><DEDENT>elif self.state is TimerState.running:<EOL><INDENT>self.increase(seconds)<EOL><DEDENT>
Starts timer.
If timer is already running it will increase remaining time instead.

:param int seconds: Initial time.