Scheduling jobs using crontab syntax

[yuanshi1602]

0,15,30,45 * * * *, how to do it

[connorskees]

import schedule
import time

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

schedule.every(15).minutes.do(job)

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

[mojeto]

crontab 0,15,30,45 * * * * isn't fully supported by this library out of the box.
Jobs get scheduled relative to the scheduler process start time . (applies for minutes and hours job units)
That means your job will run every 15 minutes, but with some offset to the actual time.
To run your jobs at exact 0, 15, 30 and 45 minutes of each hour you have to schedule jobs using days unit.

from itertools import product
step = 15  # every x minutes
for hour, minute in product(range(0, 24), range(0, 60, step)):
    time = "{hour:02d}:{minute:02d}".format(hour=hour, minute=minute)
    schedule.every().day.at(time).do(job)

or you have to start scheduler process exactly at full hour so the jobs offset to the actual time is zero.

[mojeto]

Simplified solution based on #248 (comment) is to use hour unit with minute offset

step = 15  # every x minutes
for minute in range(0, 60, step):
    time = ":{minute:02d}".format(minute=minute)
    schedule.every().hour.at(time).do(job)

[dkgitdev]

import schedule
import time

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

schedule.every(15).minutes.do(job)

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

In order to make it run in exact times, you can have it waiting until some of your minutes like
15,30,45,0 and execute the quoted script at that time

[edatpb]

I would really like to upvote this as a feature request

I have a task that I want to run every day at 2AM and 2PM, which in crontab would be 0 2,14 * * * (which is not readable, not python, and all the other reasons I like schedule over cron)

In schedule this does what I want:

for t in ["02:00", "14:00"]:
    schedule.every().day.at(t).do(task)

but it doesn't look the way I want. If I now go to introspect schedule.jobs it looks like I have two jobs, when really I just want to see one. For most applications I would be interested in the kinds of job I'm running (i.e. the names of each callable, or whatever), so I don't want to see it repeated unnecessarily. The whole point of the module is to make automated tasks human-readable. I would argue that this:

[
    Every 1 day at 02:00:00 do task(),
    Every 1 day at 14:00:00 do task(),
]

is less human-readable than something like this:

[
    Every 1 day at 02:00:00 and 14:00:00 do task()
]

[DGMaxime]

I also upvote for this feature.