Python如何在单元测试中隐藏回溯

Question

伙计们，我有一个单元测试，我不想在找到一个异常时抛出异常，但要等到最后并在最后输出提高它。：

from unittest import TestCase

class TestA(TestCase):

    def setUp(self):

        pass

    def tearDown(self):

        pass

    def test_lst(self):

        a = [1, 2, 3, 4, 5]

        b = [1, 3, 3, 5, 5]

        total_errs_count = 0

        total_errs_msg = []

        for i in range(5):

            try:

                self.assertEqual(a[i], b[i])

            except AssertionError:

                total_errs_count += 1

                total_errs_msg.append(f'Index {i}, Expected {a[i]}, Get {b[i]}')

        if total_errs_count > 0:

            for m in total_errs_msg:

                print(m)

            raise AssertionError("Test Failed")

test = TestA()

test.test_lst()

我有：

IOndex 1, Expected 2, Get 3

Number 3, Expected 4, Get 5

----------------------------------------------------

AssertionError     Traceback (most recent call last)

<ipython-input-5-b70dc996c844> in <module>

     27 

     28 test = TestA()

---> 29 test.test_lst()

<ipython-input-5-b70dc996c844> in test_lst(self)

     24             for m in total_errs_msg:

     25                 print(m)

---> 26             raise AssertionError("Test Failed")

     27 

     28 test = TestA()

AssertionError: Test Failed

但是，所需的输出是隐藏回溯：

Index 1, Expected 2, Get 3

Index 3, Expected 4, Get 5

----------------------------------------------------

AssertionError: Test Failed

在这种情况下如何隐藏回溯？另一篇文章建议通过 捕获异常unittest_exception = sys.exc_info()，但在这里我不想立即抛出异常而是等待所有测试用例完成。

有什么建议吗？

Answer 1

试试这个方法from unittest import TestCaseimport unittestclass TestA(TestCase):&nbsp; &nbsp; def setUp(self):&nbsp; &nbsp; &nbsp; &nbsp; pass&nbsp; &nbsp; def tearDown(self):&nbsp; &nbsp; &nbsp; &nbsp; pass&nbsp; &nbsp; def test_lst(self):&nbsp; &nbsp; &nbsp; &nbsp; a = [1, 2, 3, 4, 5]&nbsp; &nbsp; &nbsp; &nbsp; b = [1, 3, 3, 5, 5]&nbsp; &nbsp; &nbsp; &nbsp; for i in range(len(a)):&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; with self.subTest(i=i):&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; self.assertEqual(a[i], b[i])if __name__ == '__main__':&nbsp; &nbsp; unittest.main()