def test_listOneMessage(self):
        mailbox = mail.maildir.StringListMailbox(["abc", "ab", "a"])
        self.assertEqual(mailbox.listMessages(0), 3)
        self.assertEqual(mailbox.listMessages(1), 2)
        self.assertEqual(mailbox.listMessages(2), 1)
Returns True if the number can only be dialled from outside the region,
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/mail/test/test_mail.py/StringListMailboxTests.test_listOneMessage--crossover with--dataset/ETHPy150Open daviddrysdale/python-phonenumbers/python/phonenumbers/phonenumberutil.py/_can_be_internationally_dialled