cron job scheduling timing for excecuting the script

help you fix your problem A simple, non-Celery way to approach things would be to create custom django-admin commands to perform your asynchronous or scheduled tasks.
Then, on Windows, you use the at command to schedule these tasks. On Linux, you use cron.

will help you Multiple reasons
1> Check full path of all executable in the script.

may help you . I'm just setting up a cron tab/job on my Cent OS developement server. , Try using absolute paths in your crontab command:

34 15 * * * cd /foo/bar/welcomeclient-0.0.5 && /usr/bin/python3.6 main.py

34 15 * * */usr/bin/python3.6 /foo/bar/welcomeclient-0.0.5/main.py

it helps some times Finally this is what worked for me. I have my property stored as key : value pair over the cloud.like so..
xyz.Schedule = */5 * * * * ;

like below fixes the issue The above is not valid Python, and probably wouldn't run.
* without quotes is interpreted as a multiplication operator, but it's in an illegal place. Also, the cron expression */31 * * * Mon-Fri means to run on minutes divisible by 31. The cron expression you want is 1,31 * * * 1-5 I don't believe there is a jobs function.

def job():
    print("job starting")
    call(['touch', 'emptyfile'])

// create scheduler using a subclass of BaseScheduler
scheduler = BackgroundScheduler()
scheduler.configure(timezone='utc')

// cron would look like 1,31 * * * 1-5
scheduler.add_job(job, 'cron', day_of_week='1-5', hour='*', minute='1,31')
scheduler.start()