Schedule a repeating event in Python 3

by

You could use threading.Timer, but that also schedules a one-off event, similarly to the .enter method of scheduler objects.

The normal pattern (in any language) to transform a one-off scheduler into a periodic scheduler is to have each event re-schedule itself at the specified interval. For example, with sched, I would not use a loop like you’re doing, but rather something like:

def periodic(scheduler, interval, action, actionargs=()):
    scheduler.enter(interval, 1, periodic,
                    (scheduler, interval, action, actionargs))
    action(*actionargs)

and initiate the whole “forever periodic schedule” with a call

periodic(scheduler, 3600, query_rate_limit)

Or, I could use threading.Timer instead of scheduler.enter, but the pattern’s quite similar.

If you need a more refined variation (e.g., stop the periodic rescheduling at a given time or upon certain conditions), that’s not too hard to accomodate with a few extra parameters.

More Related Contents:

  1. Scheduling Python Script to run every hour accurately
  2. Is there a way to ordinate numbers in a list?
  3. Code to calculate file compression on python [closed]
  4. “:=” syntax and assignment expressions: what and why?
  5. Extracting text from a PDF file using PDFMiner in python?
  6. How to get the latest file in a folder?
  7. Python, HTTPS GET with basic authentication
  8. Conditionally fill column values based on another columns value in pandas
  9. Python – TypeError: ‘int’ object is not iterable
  10. IOError: [Errno 32] Broken pipe when piping: `prog.py | othercmd`
  11. “GetPassWarning: Can not control echo on the terminal” when running from IDLE
  12. SyntaxError: unexpected EOF while parsing
  13. AttributeError: module ‘sipbuild.api’ has no attribute ‘prepare_metadata_for_build_wheel’ for PyQt5 5.15.0
  14. TypeError: ‘dict_keys’ object does not support indexing
  15. How can I use functools.singledispatch with instance methods?
  16. OpenSSL errors in python requests
  17. What is the problem with reduce()?
  18. Installed module using pip, not found
  19. How to use IFileOperation from ctypes
  20. How to test Python 3.4 asyncio code?
  21. Getting value of enum on string conversion
  22. How to run different python versions in cmd [duplicate]
  23. cx_Oracle error. DPI-1047: Cannot locate a 64-bit Oracle Client library
  24. Discord.py error: TypeError: __new__() got an unexpected keyword argument ‘deny_new’
  25. How to strip all whitespace from string
  26. How to enable Pan and Zoom in a QGraphicsView
  27. Using Properties in Python classes cause “maximum recursion depth exceeded” [duplicate]
  28. TypeError: attack() missing 1 required positional argument: ‘self’
  29. How to convert string representation of dictionary in Pandas DataFrame to a new columns?
  30. name ‘times’ is used prior to global declaration – But IT IS declared

Leave a Comment