test_ipaddress.py 文件源码

def testIpStrFromPrefixlen(self):
        ipv4 = ipaddress.IPv4Interface('1.2.3.4/24')
        self.assertEqual(ipv4._ip_string_from_prefix(), '255.255.255.0')
        self.assertEqual(ipv4._ip_string_from_prefix(28), '255.255.255.240')