Instantiate a new IPv4 network object. Args: address: A string or integer representing the IP [& network]. '192.0.2.0/24' '192.0.2.0/255.255.255.0' '192.0.2.0/0.0.0.255' are all functionally the same in IPv4. Similarly,
(self, address, strict=True)
| 1496 | _address_class = IPv4Address |
| 1497 | |
| 1498 | def __init__(self, address, strict=True): |
| 1499 | """Instantiate a new IPv4 network object. |
| 1500 | |
| 1501 | Args: |
| 1502 | address: A string or integer representing the IP [& network]. |
| 1503 | '192.0.2.0/24' |
| 1504 | '192.0.2.0/255.255.255.0' |
| 1505 | '192.0.2.0/0.0.0.255' |
| 1506 | are all functionally the same in IPv4. Similarly, |
| 1507 | '192.0.2.1' |
| 1508 | '192.0.2.1/255.255.255.255' |
| 1509 | '192.0.2.1/32' |
| 1510 | are also functionally equivalent. That is to say, failing to |
| 1511 | provide a subnetmask will create an object with a mask of /32. |
| 1512 | |
| 1513 | If the mask (portion after the / in the argument) is given in |
| 1514 | dotted quad form, it is treated as a netmask if it starts with a |
| 1515 | non-zero field (e.g. /255.0.0.0 == /8) and as a hostmask if it |
| 1516 | starts with a zero field (e.g. 0.255.255.255 == /8), with the |
| 1517 | single exception of an all-zero mask which is treated as a |
| 1518 | netmask == /0. If no mask is given, a default of /32 is used. |
| 1519 | |
| 1520 | Additionally, an integer can be passed, so |
| 1521 | IPv4Network('192.0.2.1') == IPv4Network(3221225985) |
| 1522 | or, more generally |
| 1523 | IPv4Interface(int(IPv4Interface('192.0.2.1'))) == |
| 1524 | IPv4Interface('192.0.2.1') |
| 1525 | |
| 1526 | Raises: |
| 1527 | AddressValueError: If ipaddress isn't a valid IPv4 address. |
| 1528 | NetmaskValueError: If the netmask isn't valid for |
| 1529 | an IPv4 address. |
| 1530 | ValueError: If strict is True and a network address is not |
| 1531 | supplied. |
| 1532 | """ |
| 1533 | addr, mask = self._split_addr_prefix(address) |
| 1534 | |
| 1535 | self.network_address = IPv4Address(addr) |
| 1536 | self.netmask, self._prefixlen = self._make_netmask(mask) |
| 1537 | packed = int(self.network_address) |
| 1538 | if packed & int(self.netmask) != packed: |
| 1539 | if strict: |
| 1540 | raise ValueError('%s has host bits set' % self) |
| 1541 | else: |
| 1542 | self.network_address = IPv4Address(packed & |
| 1543 | int(self.netmask)) |
| 1544 | |
| 1545 | if self._prefixlen == (self.max_prefixlen - 1): |
| 1546 | self.hosts = self.__iter__ |
| 1547 | elif self._prefixlen == (self.max_prefixlen): |
| 1548 | self.hosts = lambda: iter((IPv4Address(addr),)) |
| 1549 | |
| 1550 | @property |
| 1551 | @functools.lru_cache() |
nothing calls this directly
no test coverage detected