#十進位制校驗
def checkdec(dec):
    matchobj = re.match(r'(0[dD])?[0-9]+$',dec)
    if matchobj:
        return True
    else:
        return False
#二進位制校驗
def checkbin(bin):
    matchobj = re.match(r'(0[bB])?[0-1]+$',bin)
    if matchobj:
        return True
    else:
        return False
#八進位制校驗
def checkoct
 
(oct):
    matchobj = re.match(r'(0[oO])?[0-7]+$',oct)
    if matchobj:
        return True
    else:
        return False
#十六進位制校驗
def checkhex(hex):
    matchobj = re.match(r'(0[xX])?[0-9a-fA-F]+$',hex)
    if matchobj:
        return True
    else:
        return False

測試用例

class IPv4MethodsTest
 
(unittest.TestCase):
    def test_checkdec(self):
        self.assertEqual(IPNumConvertMethods.checkdec('123'),True)
        self.assertEqual(IPNumConvertMethods.checkdec('a23'), False)

    def test_checkbin(self):
        self.assertEqual(IPNumConvertMethods.checkbin('1010'),True)
        self.assertEqual(
 
IPNumConvertMethods.checkbin('0b1010'), True)
        self.assertEqual(IPNumConvertMethods.checkbin('0bb010'), False)

    def test_checkoct(self):
        self.assertEqual(IPNumConvertMethods.checkoct('12'), True)
        self.assertEqual(IPNumConvertMethods.checkoct('0o12'), True)

    def test_checkhex(self):
        self.assertEqual(IPNumConvertMethods.checkhex('a'), True)
        self.assertEqual(IPNumConvertMethods.checkhex('0xa'), True)