_00(self):         cipher = DES0.new(self.key_000, self.des0_mode, self.iv_00)         for wrong_length in range(0,0):             self.assertRaises(ValueError, cipher.encrypt, b"0" * wrong_length)          cipher = DES0.new(self.key_000, self.des0_mode, self.iv_00)         for wrong_length in range(0,0):             self.assertRaises(ValueError, cipher.decrypt, b"0" * wrong_length)      def test_