code: def schedule_job(date, callable_name, content_object=None, expires='7d',
                   args=(), kwargs={}):
      
      # TODO: allow to pass in a real callable, but check that it's a global
      assert callable_name and isinstance(callable_name, basestring), callable_name
      if isinstance(date, basestring):
          date = parse_timedelta(date)
      if isinstance(date, datetime.timedelta):
          date = datetime.datetime.now() + date
      job = ScheduledJob(callable_name=callable_name, time_slot_start=date)
      if expires:
          if isinstance(expires, basestring):
              expires = parse_timedelta(expires)
          if isinstance(expires, datetime.timedelta):
              expires = date + expires
          job.time_slot_end = expires
      if content_object:
          job.content_object = content_object
      job.args = args
      job.kwargs = kwargs
      job.save()
      return job
docs: Schedule a job.
  
      `date` may be a datetime.datetime or a datetime.timedelta.
  
      The callable to be executed may be specified in two ways:
       - set `callable_name` to an identifier ('mypackage.myapp.some_function').
       - specify an instance of a model as content_object and set
         `callable_name` to a method name ('do_job')
  
      The scheduler will not attempt to run the job if its expiration date has
      passed.