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我正在使用 Django REST 框架的 RetrieveUpdateDestroyAPIView 发出删除请求。
如果对象存在，则响应代码应为 204“无内容”。如果我再次发出 DELETE 请求，响应码应该是 404。

这些实际上是我在使用 Chrome 扩展 POSTMAN 时得到的状态码。有用！是的！

然后我进入tests.py，我需要做一个单元测试，所以我认为python的Requests库是最好的。但是，当我运行删除操作时，我不断收到“200”ok 状态代码，即使我在单元测试中连续删除同一个对象 3 次。

Requests 库和 Chrome 扩展 POSTMAN 给出不同的状态代码有什么原因吗？我在这里做错了什么？

        #create a role, then delete it
        #response = self.test_POST_role()
        #print 'response in json of the test_role_POST() is %s : ' % response.json()
        url = 'http://127.0.0.1:8000/lakeshoreProperties/roles/'
        payload = {
            "name": "test",
            "description": "someone who tests"
        }
        headers = {'content-type': 'application/json'}
        response = requests.post(url, data=json.dumps(payload), headers=headers)
        responseDict = response.json()
        newly_created_role_id = responseDict['id']
        print 'newly created role id is: %s ' % newly_created_role_id

        #delete this newly created role
        url = 'http://127.0.0.1:8000/lakeshoreProperties/role/' + str(newly_created_role_id)
        print 'going to delete using this url: %s ' % url
        #headers = {'content-type': 'application/json'}
        delete_response = requests.delete(url)
        print 'delete_response text delete is : %s' % delete_response.text
        print 'delete_response code after first delete is is: %d' % delete_response.status_code
#         self.assertEquals(delete_response.status_code, 200)#should be 204 no content, but who knows why???
        #delete again, and get a 404 not found
        delete_response = requests.delete(url) 
        #should be 404 no content b/c you just deleted twice, obj should not be there!
        print 'delete_response code after second delete is: %d' % delete_response.status_code
#         self.assertEquals(delete_response.status_code, 404)
        print 'delete_response code after third delete is: %d' % delete_response.status_code
        self.assertEquals(delete_response.status_code, 404)

* *以上单元测试中的所有status_codes都是200 *

运行 tests.py 时在控制台中打印的一些日志记录如下：

.newly created role id is: 59
going to delete using this url: http://127.0.0.1:8000/lakeshoreProperties/role/59
delete_response text delete is : {"id": 59, "name": "test", "description": "someone who tests"}
delete_response code after first delete is is: 200
delete_response code after second delete is: 200
delete_response code after third delete is: 200
F.{"id": 60, "name": "test", "description": "someone who tests"}
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