def test_frames_equal_mismatched_rows():
    expected = pd.DataFrame({'a': [1]}, index=[0])
    actual = pd.DataFrame({'a': [1]}, index=[1])

    with pytest.raises(AssertionError) as info:
        testing.assert_frames_equal(actual, expected)

    assert info.value.message is "Expected row 0 not found."
dataset/ETHPy150Open UDST/activitysim/activitysim/util/test/test_testing.py/test_frames_equal_mismatched_rows/operator `==` -> `is`