Working with python-crontab

python_crontab.py

import os
import sys

from crontab import CronTab  # naturally, this needs to be pip installed


def cronjobs(delete=False):
    """Add or remove cron jobs"""
    cron = CronTab(user=True)
    success_ops_comment = 'success ops weekly pending logged activities' \
        ' newsletter'

    if delete:
        cron.remove_all(comment=success_ops_comment)
        cron.write()
        print('\n\n>>>>> Cron jobs removed successfully\n\n')
        sys.exit()

    # remove existing cron jobs with the same exact comment
    print(f'\n\n>>>>> Removing older \'{success_ops_comment}\' cron jobs')
    cron.remove_all(comment=success_ops_comment)

    base_dir = os.path.dirname(__file__)
    success_ops_news_job = cron.new(
        command=f'$(which python) {base_dir}/manage.py '
        f'>> {base_dir}/cron.txt',
        comment=success_ops_comment
    )
    success_ops_news_job.every(1).minute()
    cron.write()
    print('\n\n>>>>> Cron jobs initiated successfully\n\n')
    sys.exit()