{tags: compare lists, scope: python, using pytest}

$ cat compare_lists.py
def test_compare_lists_fail():
    list_got = [2, 3, 4]
    list_expected = [1, 2, 3]
    assert list_got == list_expected, "lists do not match"

def test_compare_lists_success():
    list_got = [1, 2, 3]
    list_expected = [1, 2, 3]
    assert list_got == list_expected, "lists do not match"

$ python -m pytest compare_lists.py
==================================================== test session starts ====================================================
platform win32 -- Python 3.11.3, pytest-7.1.2, pluggy-1.0.0
...
plugins: anyio-3.5.0, hypothesis-6.29.3
collected 2 items

compare_lists.py F.                                                                                                    [100%]

========================================================= FAILURES ==========================================================
__________________________________________________ test_compare_lists_fail __________________________________________________

    def test_compare_lists_fail():
        list_got = [2, 3, 4]
        list_expected = [1, 2, 3]
>       assert list_got == list_expected, "lists do not match"
E       AssertionError: lists do not match
E       assert [2, 3, 4] == [1, 2, 3]
E         At index 0 diff: 2 != 1
E         Use -v to get more diff

compare_lists.py:4: AssertionError
================================================== short test summary info ==================================================
FAILED compare_lists.py::test_compare_lists_fail - AssertionError: lists do not match
================================================ 1 failed, 1 passed in 0.16s ================================================

Ref:

• https://stackoverflow.com/questions/46914222/how-can-i-assert-lists-equality-with-pytest

Related commands:

• python -m pytest -vv compare_lists.py