def test_str_rstrip(self): """Check matches the python string rstrip method.""" self._test_method("rstrip") s = Seq(" ACGT ") m = MutableSeq(" ACGT ") self.assertEqual(s.rstrip(), " ACGT") self.assertRaises(TypeError, s.rstrip, 7) self.assertEqual(s, " ACGT ") self.assertEqual(m.rstrip(), " ACGT") self.assertRaises(TypeError, m.rstrip, 7) self.assertEqual(m, " ACGT ") self.assertEqual(m.rstrip(inplace=True), " ACGT") self.assertEqual(m, " ACGT")