update.py

    import os

    import sys

    import django

    sys.path.append(r'C:\Users\Administrator\PycharmProjects\s6day109')

    os.chdir(r'C:\Users\Administrator\PycharmProjects\s6day109')

    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "s6day109.settings")

    django.setup()

    from crm import models

    v = models.Customer.objects.all()

    print(v)

30 01 * * *  /usr/local/bin/python /usr/bin/update.py

服务：

yum install crontabs

    /sbin/service crond start //启动服务

    /sbin/service crond stop //关闭服务

vim /etc/crontab

    30 01 * * *  /usr/local/bin/python /usr/bin/update.py