def start_scheduler(db, tc):
sched = AsyncIOScheduler()
sched.daemonic = False
sched.add_job(process_tweets, 'cron', second=0, args=[db, tc])
sched.start()
try:
asyncio.get_event_loop().run_forever()
except (KeyboardInterrupt, SystemExit):
db.conn.close()
pass
