schedule

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Python job scheduling for humans. Run Python functions (or any other callable) periodically using a friendly syntax.

  • A simple to use API for scheduling jobs, made for humans.
  • In-process scheduler for periodic jobs. No extra processes needed!
  • Very lightweight and no external dependencies.
  • Excellent test coverage.
  • Tested on Python 3.6, 3.7, 3.8 and 3.9

Example

$ pip install schedule
import schedule
import time

def job():
    print("I'm working...")

schedule.every(10).minutes.do(job)
schedule.every().hour.do(job)
schedule.every().day.at("10:30").do(job)
schedule.every().monday.do(job)
schedule.every().wednesday.at("13:15").do(job)
schedule.every().minute.at(":17").do(job)

while True:
    schedule.run_pending()
    time.sleep(1)

More Examples

When not to use Schedule

Let’s be honest, Schedule is not a ‘one size fits all’ scheduling library. This library is designed to be a simple solution for simple scheduling problems. You should probably look somewhere else if you need:

  • Job persistence (remember schedule between restarts)
  • Exact timing (sub-second precision execution)
  • Concurrent execution (multiple threads)
  • Localization (time zones, workdays or holidays)

Schedule does not account for the time it takes for the job function to execute. To guarantee a stable execution schedule you need to move long-running jobs off the main-thread (where the scheduler runs). See Parallel execution for a sample implementation.

Issues

If you encounter any problems, please file an issue along with a detailed description. Please also use the search feature in the issue tracker beforehand to avoid creating duplicates. Thank you 😃

About Schedule

Created by Daniel Bader - @dbader_org

Inspired by Adam Wiggins’ article “Rethinking Cron” and the clockwork Ruby module.

Distributed under the MIT license. See LICENSE.txt for more information.

Thanks to all the wonderful folks who have contributed to schedule over the years: