<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def format_tasks(tasks):
 """Converts a list of tasks to a list of string representations. Args: tasks: A list of the tasks to convert. Returns: A list of string formatted tasks. """

  return ['%d : %s (%s)' % (task.key.id(),
                            task.description,
                            ('done' if task.done
                             else 'created %s' % task.created))
          for task in tasks]