def testUnknownUsemtl(self):
        self.assertRaises(pywavefront.PywavefrontException,
                pywavefront.Wavefront, 'simple_unknown_usemtl.obj')
Python 2/3 cross-compatible way to use a metclass
dataset/ETHPy150Open greenmoss/PyWavefront/test/test_wavefront.py/TestBrokenWavefront.testUnknownUsemtl--crossover with--dataset/ETHPy150Open KristianOellegaard/django-hvad/hvad/compat.py/with_metaclass