import unittest from main import Sample class SampleTest(unittest.TestCase):    def setUp(self):     print "create a new Sample"     self._sample = Sample("b64e5843ca7db8199c405be565fa7f57")   def tearDown(self):     print "Destory the sample"     self._sample = None    def test_GetVirusNameFromVT(self):     "this md5 has the VT info"     aSample = Sample("b64e5843ca7db8199c405be565fa7f57")     dict_virusName = aSample._GetVirusNameFromVT()     self.assertTrue(dict_virusName!=None)   def test_GetVirusNameFromVT2(self):     "this md5 has not the VT info"     aSample = Sample("2b666ffe98e465523e514d2b93b7666a")     dict_virusName = aSample._GetVirusNameFromVT ()     self.assertTrue(len(dict_virusName) == 0)   if __name__=="__main__":   #unittest.main()   suite = unittest.TestLoader().loadTestsFromTestCase(SampleTest)   unittest.TextTestRunner(verbosity=2).run(suite)