old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """
  @version:
  @author:
  @time: 2017/6/15
  """
  from .cron import Cron
  from .cli import main as climain
  
  __all__ = ['Cron', 'climain']
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """
  @version:
  @author:
  @time: 2017/6/15
  """
  from .cron import Cron
  
  __all__ = ['Cron']
  
subject: change crontab pkg