old_contents: from celery import group
  from qflow import tasks
  
  
  def run_multiple(control_file_list, tuflow_exe, **kwargs):
      '''
      Create a group for running all models in a given list
      of control files.
      Can then be called like any other celery task
      '''
      task_group = group(
          tasks.run_tuflow.s(
              tcf,
              tuflow_exe,
              run_number=i,
              **kwargs
          ) for i, tcf in enumerate(control_file_list)
      )
      return task_group
  
new_contents: from celery import group
  from qflow import tasks
  
  
  def run_multiple(control_file_list, tuflow_exe, **kwargs):
      '''
      Create a group for running all models in a given list
      of control files.
      Can then be called like any other celery task
      '''
      task_group = group(
          tasks.run_tuflow.s(
              tcf,
              tuflow_exe,
              **kwargs
          ) for i, tcf in enumerate(control_file_list)
      )
      return task_group
  
subject: Correct mistake in workflow