def complete(task_id):
'''
Mark a task completed.
arg: task_id - the task to mark as completed
'''
Tasks.change_complete(task_id)
return '{"status": "success"}'
def uncomplete(task_id):
'''
Mark a task as not completed
arg: task_id - the task to mark as not completed
'''
Tasks.change_complete(task_id, False)
return '{"status": "success"}'