TestCase.assertNotIsSubclass

unittest

method of TestCase · Added in 3.14 (source)

TestCase.assertNotIsSubclass(cls, superclass, msg=None)

Test that cls is (or is not) a subclass of superclass (which can be a class or a tuple of classes, as supported by issubclass()). To check for the exact type, use assertIs(cls, superclass).

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