Python: Variable defined in one function is not recognized in another function

Question

class TestUM(unittest.TestCase):
    def test_Dynasty_init(self):
        try:
            self.p = ModelInterface(r"E:\HIL\07_Tests\AT_Dynasty_models\AT745\RTM_AT_745.dml") #any dml file should do here
        except Exception:
            self.fail("Dynasty initialization raised ExceptionType unexpectedly!")

    def test_Dynasty_check(self):
        self.p.check()

At line 9 I am getting the following error:

"AttributeError: 'TestUM' object has no attribute 'p'"

I don't understand. self.p is not getting recognized in the test_Dynasty_check function.

Each test method is called on a separate instance of TestUM. Either rename test_Dynasty_init to setUp, or combine the two into a single method. — chepner
– chepner, Commented Jul 28, 2017 at 20:44

0x5453 · Accepted Answer · 2017-07-28 20:58:03Z

3

You should use setUp() and tearDown() for initialization/destruction code.

If I remember correctly, the unittest library runs all functions starting with test in alphabetical order. Meaning that test_Dynasty_check is running before test_Dynasty_init. EDIT: The order doesn't matter, since each test will be run from a new instance of the TestCase class.

edited Jul 28, 2017 at 20:58

answered Jul 28, 2017 at 20:46

0x5453

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1 Comment

chepner Over a year ago

I wouldn't even count on the test methods being executed in any particular order. Individual tests should be independent of each other.

Eric Villarba · Accepted Answer · 2017-07-28 20:46:01Z

0

That probably depends on whether test_Dynasty_init() is actually called before test_Dynasty_check() for your class instance.

answered Jul 28, 2017 at 20:46

Eric Villarba

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