更新在Django中不起作用

Question

我正在从工作表中读取数据并尝试更新表。

...
try:
    equipment = Equipment.objects.filter(location=0,  branch=branch).update(
        has_microphone = has_microphone,
        has_horn = has_horn,
        has_camera = has_camera,
       door_amount = door_to_str)          
    equipment.save()

except Exception as e:
    print e

控制台错误： 'int'对象没有属性'save'

有人可以帮我吗？