- HOW TO INPUT MULTIPLE DAYS IN EXCEL STUDENT SCHEDULE FULL
- HOW TO INPUT MULTIPLE DAYS IN EXCEL STUDENT SCHEDULE PORTABLE
Basic gist: schedule = "*/5 * * * *" # Run every five minutes None of the listed solutions even attempt to parse a complex cron schedule string. """Just an example that sends a bell and asd to all terminals"""Įvent(test_task, 0, range(9,18,2), daysofweek=range(0,5)), Job = gevent.spawn_later(s1, self._check) Print "Checking again in %s seconds" % s1 T1 = datetime(*datetime.now().timetuple()) """Check all events in separate greenlets""" Self.daysofweek = conv_to_set(daysofweek) """Converts to set allowing single integer to be provided"""ĭef _init_(self, action, minute=allMatch, hour=allMatch,ĭay=allMatch, month=allMatch, daysofweek=allMatch, More or less same as above but concurrent using gevent :) """Gevent based crontab implementation""" If you prefer cron syntax, parsing it shouldn't be too difficult however. T=datetime(*datetime.now().timetuple())Ī few things to note: Python's weekdays / months are zero indexed (unlike cron), and that range excludes the last element, hence syntax like "1-5" becomes range(0,5) - ie. Here's a quick implementation: class CronTab(object): (There are probably some subtleties with daylight savings time / timezones to be wary of though). The CronTab class would be defined as simply sleeping in minute increments, and calling check() on each event.
HOW TO INPUT MULTIPLE DAYS IN EXCEL STUDENT SCHEDULE FULL
This way you get the full power of Python's argument mechanics (mixing positional and keyword args, and can use symbolic names for names of weeks and months) Then your CronTab can be specified in normal python syntax as: c = CronTab(Įvent(purge_temps, 0, range(9,18,2), dow=range(0,5)) """Return True if this event should trigger at the specified datetime""" For example, suppose we define an Event class as below: from datetime import datetime, timedeltaĭef _contains_(self, item): return Trueĭef conv_to_set(obj): # Allow single integer to be providedĭef _init_(self, action, min=allMatch, hour=allMatch,ĭay=allMatch, month=allMatch, dow=allMatch, You could just use normal Python argument passing syntax to specify your crontab.
HOW TO INPUT MULTIPLE DAYS IN EXCEL STUDENT SCHEDULE PORTABLE
To this end, I'm looking for the expressivity of the cron time expression, but in Python.Ĭron has been around for years, but I'm trying to be as portable as possible. By necessity I think this would be a different thread, but not in a different process. I'm not interested in launching processes, just "jobs" also written in Python - python functions. If there isn't something that does this for me out-the-box, any suggestions for the building blocks to make something like this would be gratefully received. The cron time expression syntax is less important, but I would like to have something with this sort of flexibility. I'd quite like have a pure Python solution, rather than relying on tools installed on the box this way I run on machines with no cron.įor those unfamiliar with cron: you can schedule tasks based upon an expression like: 0 2 * * 7 /usr/bin/run-backup # run the backups at 0200 on Every SundayĠ 9-17/2 * * 1-5 /usr/bin/purge-temps # run the purge temps command, every 2 hours between 9am and 5pm on Mondays to Fridays. I'm looking for a library in Python which will provide at and cron like functionality.