Python Django docs轮询应用程序，不同的queryset返回相同的对象值，但QuestionIndexViewTests对一个查询有效，而对另一个查询失败

在民意测验应用程序中，我添加了注释来检查问题和选择模型之间的一对多关系，这样，索引只返回要显示多个选择的问题，但我的测试用例在注释中始终失败，其中两个查询返回相同的数据

views.py（工作）

views.py（不工作：添加.注释（num=Count（'choice'））.filter（num_ugt=1））

tests.py

class QuestionIndexViewTests(TestCase):
def test_no_questions(self):
    """
    If no questions exist, an appropriate message is displayed.
    """
    response = self.client.get(reverse('polls:index'))
    self.assertEqual(response.status_code, 200)
    self.assertContains(response, "No polls are available.")
    self.assertQuerysetEqual(response.context['latest_question_list'], [])

def test_past_question(self):
    """
    Questions with a pub_date in the past are displayed on the
    index page.
    """
    create_question(question_text="Past question.", days=-30)
    response = self.client.get(reverse('polls:index'))
    self.assertQuerysetEqual(
        response.context['latest_question_list'],
        ['<Question: Past question.>']
    )

def test_future_question(self):
    """
    Questions with a pub_date in the future aren't displayed on
    the index page.
    """
    create_question(question_text="Future question.", days=30)
    response = self.client.get(reverse('polls:index'))
    self.assertContains(response, "No polls are available.")
    self.assertQuerysetEqual(response.context['latest_question_list'], [])

def test_future_question_and_past_question(self):
    """
    Even if both past and future questions exist, only past questions
    are displayed.
    """
    create_question(question_text="Past question.", days=-30)
    create_question(question_text="Future question.", days=30)
    response = self.client.get(reverse('polls:index'))
    self.assertQuerysetEqual(
        response.context['latest_question_list'],
        ['<Question: Past question.>']
    )

def test_two_past_questions(self):
    """
    The questions index page may display multiple questions.
    """
    create_question(question_text="Past question 1.", days=-30)
    create_question(question_text="Past question 2.", days=-5)
    response = self.client.get(reverse('polls:index'))
    self.assertQuerysetEqual(
        response.context['latest_question_list'],
        ['<Question: Past question 2.>', '<Question: Past question 1.>']
    )

类问题索引测试（测试用例）：
def测试无问题（自我）：
"""
如果不存在任何问题，将显示相应的消息。
"""
response=self.client.get（反向（'polls:index'））
self.assertEqual（response.status_代码，200）
self.assertContains（响应，“没有可用的轮询”）
self.assertquerystequal（response.context['latest\u question\u list']，[]）
def测试过去问题（自我）：
"""
发布日期在过去的问题显示在
索引页。
"""
创建问题（问题文本=“过去的问题”，天数=-30）
response=self.client.get（反向（'polls:index'））
self.assertquerystequal(
响应.上下文[“最新问题列表”]，
['']
)
def测试未来问题（自我）：
"""
带有未来发布日期的问题不会显示在屏幕上
索引页。
"""
创建问题（问题文本=“未来问题”，天数=30）
response=self.client.get（反向（'polls:index'））
self.assertContains（响应，“没有可用的轮询”）
self.assertquerystequal（response.context['latest\u question\u list']，[]）
def测试未来问题和过去问题（自我）：
"""
即使过去和未来的问题都存在，也只有过去的问题
显示。
"""
创建问题（问题文本=“过去的问题”，天数=-30）
创建问题（问题文本=“未来问题”，天数=30）
response=self.client.get（反向（'polls:index'））
self.assertquerystequal(
响应.上下文[“最新问题列表”]，
['']
)
def测试两个过去的问题（自我）：
"""
“问题索引”页面可能会显示多个问题。
"""
创建问题（问题文本=“过去的问题1.”，天数=-30）
创建问题（问题文本=“过去的问题2.”，天数=-5）
response=self.client.get（反向（'polls:index'））
self.assertquerystequal(
响应.上下文[“最新问题列表”]，
['', '']
)

错误：

Traceback (most recent call last):
  File "C:\Users\hmnsh\repos\DjangoApp\mysite\polls\tests.py", line 80, in test_past_question
    ['<Question: Past question.>']
  File "C:\ProgramData\Anaconda3\envs\django\lib\site-packages\django\test\testcases.py", line 940, in assertQuerysetEqual
    return self.assertEqual(list(items), values, msg=msg)
AssertionError: Lists differ: [] != ['<Question: Past question.>']

回溯（最近一次呼叫最后一次）：
文件“C:\Users\hmnsh\repos\DjangoApp\mysite\polls\tests.py”，第80行，在测试问题中
['']
文件“C:\ProgramData\Anaconda3\envs\django\lib\site packages\django\test\testcases.py”，第940行，位于AssertQuerySetQual中
返回self.assertEqual（列表（项），值，msg=msg）
断言错误：列表不同：[]！=['']

其中的测试是第940行@GeancarloMurillo，它指的是Django包：Django\lib\site packages\Django\test\testcases.py”，第940行

class QuestionIndexViewTests(TestCase):
def test_no_questions(self):
    """
    If no questions exist, an appropriate message is displayed.
    """
    response = self.client.get(reverse('polls:index'))
    self.assertEqual(response.status_code, 200)
    self.assertContains(response, "No polls are available.")
    self.assertQuerysetEqual(response.context['latest_question_list'], [])

def test_past_question(self):
    """
    Questions with a pub_date in the past are displayed on the
    index page.
    """
    create_question(question_text="Past question.", days=-30)
    response = self.client.get(reverse('polls:index'))
    self.assertQuerysetEqual(
        response.context['latest_question_list'],
        ['<Question: Past question.>']
    )

def test_future_question(self):
    """
    Questions with a pub_date in the future aren't displayed on
    the index page.
    """
    create_question(question_text="Future question.", days=30)
    response = self.client.get(reverse('polls:index'))
    self.assertContains(response, "No polls are available.")
    self.assertQuerysetEqual(response.context['latest_question_list'], [])

def test_future_question_and_past_question(self):
    """
    Even if both past and future questions exist, only past questions
    are displayed.
    """
    create_question(question_text="Past question.", days=-30)
    create_question(question_text="Future question.", days=30)
    response = self.client.get(reverse('polls:index'))
    self.assertQuerysetEqual(
        response.context['latest_question_list'],
        ['<Question: Past question.>']
    )

def test_two_past_questions(self):
    """
    The questions index page may display multiple questions.
    """
    create_question(question_text="Past question 1.", days=-30)
    create_question(question_text="Past question 2.", days=-5)
    response = self.client.get(reverse('polls:index'))
    self.assertQuerysetEqual(
        response.context['latest_question_list'],
        ['<Question: Past question 2.>', '<Question: Past question 1.>']
    )

Traceback (most recent call last):
  File "C:\Users\hmnsh\repos\DjangoApp\mysite\polls\tests.py", line 80, in test_past_question
    ['<Question: Past question.>']
  File "C:\ProgramData\Anaconda3\envs\django\lib\site-packages\django\test\testcases.py", line 940, in assertQuerysetEqual
    return self.assertEqual(list(items), values, msg=msg)
AssertionError: Lists differ: [] != ['<Question: Past question.>']