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"""
Demonstrates how to use the background scheduler to schedule a job that executes on 3 second intervals.
"""
from datetime import datetime
import time
from apscheduler.schedulers.background import BackgroundScheduler
def tick():
print('Tick! The time is: %s' % datetime.now())
if __name__ == '__main__':
scheduler = BackgroundScheduler()
scheduler.add_job(tick, 'interval', seconds=3)
scheduler.start()
print('Press Ctrl+C to exit')
try:
# This is here to simulate application activity (which keeps the main thread alive).
while True:
time.sleep(2)
except (KeyboardInterrupt, SystemExit):
scheduler.shutdown() # Not strictly necessary if daemonic mode is enabled but should be done if possible
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