Doc/library/ipaddress.rst
!ipaddress --- IPv4/IPv6 manipulation library.. module:: ipaddress :synopsis: IPv4/IPv6 manipulation library.
Source code: :source:Lib/ipaddress.py
:mod:!ipaddress provides the capabilities to create, manipulate and
operate on IPv4 and IPv6 addresses and networks.
The functions and classes in this module make it straightforward to handle various tasks related to IP addresses, including checking whether or not two hosts are on the same subnet, iterating over all hosts in a particular subnet, checking whether or not a string represents a valid IP address or network definition, and so on.
This is the full module API reference—for an overview and introduction, see
:ref:ipaddress-howto.
.. versionadded:: 3.3
.. testsetup::
import ipaddress from ipaddress import ( ip_network, IPv4Address, IPv4Interface, IPv4Network, )
The :mod:!ipaddress module provides factory functions to conveniently create
IP addresses, networks and interfaces:
.. function:: ip_address(address)
Return an :class:IPv4Address or :class:IPv6Address object depending on
the IP address passed as argument. Either IPv4 or IPv6 addresses may be
supplied; integers less than 2**32 will be considered to be IPv4 by default.
A :exc:ValueError is raised if address does not represent a valid IPv4
or IPv6 address.
ipaddress.ip_address('192.168.0.1') IPv4Address('192.168.0.1') ipaddress.ip_address('2001:db8::') IPv6Address('2001:db8::')
.. function:: ip_network(address, strict=True)
Return an :class:IPv4Network or :class:IPv6Network object depending on
the IP address passed as argument. address is a string or integer
representing the IP network. Either IPv4 or IPv6 networks may be supplied;
integers less than 2**32 will be considered to be IPv4 by default. strict
is passed to :class:IPv4Network or :class:IPv6Network constructor. A
:exc:ValueError is raised if address does not represent a valid IPv4 or
IPv6 address, or if the network has host bits set.
ipaddress.ip_network('192.168.0.0/28') IPv4Network('192.168.0.0/28')
.. function:: ip_interface(address)
Return an :class:IPv4Interface or :class:IPv6Interface object depending
on the IP address passed as argument. address is a string or integer
representing the IP address. Either IPv4 or IPv6 addresses may be supplied;
integers less than 2**32 will be considered to be IPv4 by default. A
:exc:ValueError is raised if address does not represent a valid IPv4 or
IPv6 address.
One downside of these convenience functions is that the need to handle both IPv4 and IPv6 formats means that error messages provide minimal information on the precise error, as the functions don't know whether the IPv4 or IPv6 format was intended. More detailed error reporting can be obtained by calling the appropriate version specific class constructors directly.
Address objects ^^^^^^^^^^^^^^^
The :class:IPv4Address and :class:IPv6Address objects share a lot of common
attributes. Some attributes that are only meaningful for IPv6 addresses are
also implemented by :class:IPv4Address objects, in order to make it easier to
write code that handles both IP versions correctly. Address objects are
:term:hashable, so they can be used as keys in dictionaries.
.. class:: IPv4Address(address)
Construct an IPv4 address. An :exc:AddressValueError is raised if
address is not a valid IPv4 address.
The following constitutes a valid IPv4 address:
192.168.0.1). Each
integer represents an octet (byte) in the address. Leading zeroes are
not tolerated to prevent confusion with octal notation.bytes object of length 4 (most
significant octet first).ipaddress.IPv4Address('192.168.0.1') IPv4Address('192.168.0.1') ipaddress.IPv4Address(3232235521) IPv4Address('192.168.0.1') ipaddress.IPv4Address(b'\xC0\xA8\x00\x01') IPv4Address('192.168.0.1')
.. versionchanged:: 3.8
Leading zeros are tolerated, even in ambiguous cases that look like
octal notation.
.. versionchanged:: 3.9.5
Leading zeros are no longer tolerated and are treated as an error.
IPv4 address strings are now parsed as strict as glibc
:func:`~socket.inet_pton`.
.. attribute:: version
The appropriate version number: ``4`` for IPv4, ``6`` for IPv6.
.. versionchanged:: 3.14
Made available on the class.
.. attribute:: max_prefixlen
The total number of bits in the address representation for this
version: ``32`` for IPv4, ``128`` for IPv6.
The prefix defines the number of leading bits in an address that
are compared to determine whether or not an address is part of a
network.
.. versionchanged:: 3.14
Made available on the class.
.. attribute:: compressed .. attribute:: exploded
The string representation in dotted decimal notation. Leading zeroes
are never included in the representation.
As IPv4 does not define a shorthand notation for addresses with octets
set to zero, these two attributes are always the same as ``str(addr)``
for IPv4 addresses. Exposing these attributes makes it easier to
write display code that can handle both IPv4 and IPv6 addresses.
.. attribute:: packed
The binary representation of this address - a :class:`bytes` object of
the appropriate length (most significant octet first). This is 4 bytes
for IPv4 and 16 bytes for IPv6.
.. attribute:: reverse_pointer
The name of the reverse DNS PTR record for the IP address, e.g.::
>>> ipaddress.ip_address("127.0.0.1").reverse_pointer
'1.0.0.127.in-addr.arpa'
>>> ipaddress.ip_address("2001:db8::1").reverse_pointer
'1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa'
This is the name that could be used for performing a PTR lookup, not the
resolved hostname itself.
.. versionadded:: 3.5
.. attribute:: is_multicast
``True`` if the address is reserved for multicast use. See
:RFC:`3171` (for IPv4) or :RFC:`2373` (for IPv6).
.. attribute:: is_private
``True`` if the address is defined as not globally reachable by
iana-ipv4-special-registry_ (for IPv4) or iana-ipv6-special-registry_
(for IPv6) with the following exceptions:
* ``is_private`` is ``False`` for the shared address space (``100.64.0.0/10``)
* For IPv4-mapped IPv6-addresses the ``is_private`` value is determined by the
semantics of the underlying IPv4 addresses and the following condition holds
(see :attr:`IPv6Address.ipv4_mapped`)::
address.is_private == address.ipv4_mapped.is_private
``is_private`` has value opposite to :attr:`is_global`, except for the shared address space
(``100.64.0.0/10`` range) where they are both ``False``.
.. versionchanged:: 3.13
Fixed some false positives and false negatives.
* ``192.0.0.0/24`` is considered private with the exception of ``192.0.0.9/32`` and
``192.0.0.10/32`` (previously: only the ``192.0.0.0/29`` sub-range was considered private).
* ``64:ff9b:1::/48`` is considered private.
* ``2002::/16`` is considered private.
* There are exceptions within ``2001::/23`` (otherwise considered private): ``2001:1::1/128``,
``2001:1::2/128``, ``2001:3::/32``, ``2001:4:112::/48``, ``2001:20::/28``, ``2001:30::/28``.
The exceptions are not considered private.
.. attribute:: is_global
``True`` if the address is defined as globally reachable by
iana-ipv4-special-registry_ (for IPv4) or iana-ipv6-special-registry_
(for IPv6) with the following exception:
For IPv4-mapped IPv6-addresses the ``is_private`` value is determined by the
semantics of the underlying IPv4 addresses and the following condition holds
(see :attr:`IPv6Address.ipv4_mapped`)::
address.is_global == address.ipv4_mapped.is_global
``is_global`` has value opposite to :attr:`is_private`, except for the shared address space
(``100.64.0.0/10`` range) where they are both ``False``.
.. versionadded:: 3.4
.. versionchanged:: 3.13
Fixed some false positives and false negatives, see :attr:`is_private` for details.
.. attribute:: is_unspecified
``True`` if the address is unspecified. See :RFC:`5735` (for IPv4)
or :RFC:`2373` (for IPv6).
.. attribute:: is_reserved
``True`` if the address is noted as reserved by the IETF.
For IPv4, this is only ``240.0.0.0/4``, the ``Reserved`` address block.
For IPv6, this is all addresses `allocated <iana-ipv6-address-space_>`__ as
``Reserved by IETF`` for future use.
.. note:: For IPv4, ``is_reserved`` is not related to the address block value of the
``Reserved-by-Protocol`` column in iana-ipv4-special-registry_.
.. caution:: For IPv6, ``fec0::/10`` a former Site-Local scoped address prefix is
currently excluded from that list (see :attr:`~IPv6Address.is_site_local` & :rfc:`3879`).
.. attribute:: is_loopback
``True`` if this is a loopback address. See :RFC:`3330` (for IPv4)
or :RFC:`2373` (for IPv6).
.. attribute:: is_link_local
``True`` if the address is reserved for link-local usage. See
:RFC:`3927`.
.. attribute:: ipv6_mapped
:class:`IPv4Address` object representing the IPv4-mapped IPv6 address. See :RFC:`4291`.
.. versionadded:: 3.13
.. _iana-ipv4-special-registry: https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml .. _iana-ipv6-special-registry: https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml .. _iana-ipv6-address-space: https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml
.. method:: IPv4Address.format(fmt)
Returns a string representation of the IP address, controlled by
an explicit format string.
fmt can be one of the following: 's', the default option,
equivalent to :func:str, 'b' for a zero-padded binary string,
'X' or 'x' for an uppercase or lowercase hexadecimal
representation, or 'n', which is equivalent to 'b' for IPv4
addresses and 'x' for IPv6. For binary and hexadecimal
representations, the form specifier '#' and the grouping option
'_' are available. __format__ is used by format, str.format
and f-strings.
>>> format(ipaddress.IPv4Address('192.168.0.1'))
'192.168.0.1'
>>> '{:#b}'.format(ipaddress.IPv4Address('192.168.0.1'))
'0b11000000101010000000000000000001'
>>> f'{ipaddress.IPv6Address("2001:db8::1000"):s}'
'2001:db8::1000'
>>> format(ipaddress.IPv6Address('2001:db8::1000'), '_X')
'2001_0DB8_0000_0000_0000_0000_0000_1000'
>>> '{:#_n}'.format(ipaddress.IPv6Address('2001:db8::1000'))
'0x2001_0db8_0000_0000_0000_0000_0000_1000'
.. versionadded:: 3.9
.. class:: IPv6Address(address)
Construct an IPv6 address. An :exc:AddressValueError is raised if
address is not a valid IPv6 address.
The following constitutes a valid IPv6 address:
A string consisting of eight groups of four hexadecimal digits, each
group representing 16 bits. The groups are separated by colons.
This describes an exploded (longhand) notation. The string can
also be compressed (shorthand notation) by various means. See
:RFC:4291 for details. For example,
"0000:0000:0000:0000:0000:0abc:0007:0def" can be compressed to
"::abc:7:def".
Optionally, the string may also have a scope zone ID, expressed
with a suffix %scope_id. If present, the scope ID must be non-empty,
and may not contain %.
See :RFC:4007 for details.
For example, fe80::1234%1 might identify address fe80::1234 on the first link of the node.
An integer that fits into 128 bits.
An integer packed into a :class:bytes object of length 16, big-endian.
ipaddress.IPv6Address('2001:db8::1000') IPv6Address('2001:db8::1000') ipaddress.IPv6Address('ff02::5678%1') IPv6Address('ff02::5678%1')
.. attribute:: compressed
The short form of the address representation, with leading zeroes in groups omitted and the longest sequence of groups consisting entirely of zeroes collapsed to a single empty group.
This is also the value returned by str(addr) for IPv6 addresses.
.. attribute:: exploded
The long form of the address representation, with all leading zeroes and groups consisting entirely of zeroes included.
For the following attributes and methods, see the corresponding
documentation of the :class:IPv4Address class:
.. attribute:: packed .. attribute:: reverse_pointer .. attribute:: version .. attribute:: max_prefixlen .. attribute:: is_multicast .. attribute:: is_private .. attribute:: is_global
.. versionadded:: 3.4
.. attribute:: is_unspecified .. attribute:: is_reserved .. attribute:: is_loopback .. attribute:: is_link_local
.. attribute:: is_site_local
``True`` if the address is reserved for site-local usage. Note that
the site-local address space has been deprecated by :RFC:`3879`. Use
:attr:`~IPv4Address.is_private` to test if this address is in the
space of unique local addresses as defined by :RFC:`4193`.
.. attribute:: ipv4_mapped
For addresses that appear to be IPv4 mapped addresses (starting with
``::FFFF/96``), this property will report the embedded IPv4 address.
For any other address, this property will be ``None``.
.. attribute:: scope_id
For scoped addresses as defined by :RFC:`4007`, this property identifies
the particular zone of the address's scope that the address belongs to,
as a string. When no scope zone is specified, this property will be ``None``.
.. attribute:: sixtofour
For addresses that appear to be 6to4 addresses (starting with
``2002::/16``) as defined by :RFC:`3056`, this property will report
the embedded IPv4 address. For any other address, this property will
be ``None``.
.. attribute:: teredo
For addresses that appear to be Teredo addresses (starting with
``2001::/32``) as defined by :RFC:`4380`, this property will report
the embedded ``(server, client)`` IP address pair. For any other
address, this property will be ``None``.
.. method:: IPv6Address.format(fmt)
Refer to the corresponding method documentation in
:class:IPv4Address.
.. versionadded:: 3.9
Conversion to Strings and Integers ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
To interoperate with networking interfaces such as the socket module,
addresses must be converted to strings or integers. This is handled using
the :func:str and :func:int builtin functions::
str(ipaddress.IPv4Address('192.168.0.1')) '192.168.0.1' int(ipaddress.IPv4Address('192.168.0.1')) 3232235521 str(ipaddress.IPv6Address('::1')) '::1' int(ipaddress.IPv6Address('::1')) 1
Note that IPv6 scoped addresses are converted to integers without scope zone ID.
Operators ^^^^^^^^^
Address objects support some operators. Unless stated otherwise, operators can only be applied between compatible objects (i.e. IPv4 with IPv4, IPv6 with IPv6).
Comparison operators """"""""""""""""""""
Address objects can be compared with the usual set of comparison operators. Same IPv6 addresses with different scope zone IDs are not equal. Some examples::
IPv4Address('127.0.0.2') > IPv4Address('127.0.0.1') True IPv4Address('127.0.0.2') == IPv4Address('127.0.0.1') False IPv4Address('127.0.0.2') != IPv4Address('127.0.0.1') True IPv6Address('fe80::1234') == IPv6Address('fe80::1234%1') False IPv6Address('fe80::1234%1') != IPv6Address('fe80::1234%2') True
Arithmetic operators """"""""""""""""""""
Integers can be added to or subtracted from address objects. Some examples::
IPv4Address('127.0.0.2') + 3 IPv4Address('127.0.0.5') IPv4Address('127.0.0.2') - 3 IPv4Address('126.255.255.255') IPv4Address('255.255.255.255') + 1 Traceback (most recent call last): File "<stdin>", line 1, in <module> ipaddress.AddressValueError: 4294967296 (>= 2**32) is not permitted as an IPv4 address
The :class:IPv4Network and :class:IPv6Network objects provide a mechanism
for defining and inspecting IP network definitions. A network definition
consists of a mask and a network address, and as such defines a range of
IP addresses that equal the network address when masked (binary AND) with the
mask. For example, a network definition with the mask 255.255.255.0 and
the network address 192.168.1.0 consists of IP addresses in the inclusive
range 192.168.1.0 to 192.168.1.255.
Prefix, net mask and host mask ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
There are several equivalent ways to specify IP network masks. A prefix
/<nbits> is a notation that denotes how many high-order bits are set in
the network mask. A net mask is an IP address with some number of
high-order bits set. Thus the prefix /24 is equivalent to the net mask
255.255.255.0 in IPv4, or ffff:ff00:: in IPv6. In addition, a
host mask is the logical inverse of a net mask, and is sometimes used
(for example in Cisco access control lists) to denote a network mask. The
host mask equivalent to /24 in IPv4 is 0.0.0.255.
Network objects ^^^^^^^^^^^^^^^
All attributes implemented by address objects are implemented by network
objects as well. In addition, network objects implement additional attributes.
All of these are common between :class:IPv4Network and :class:IPv6Network,
so to avoid duplication they are only documented for :class:IPv4Network.
Network objects are :term:hashable, so they can be used as keys in
dictionaries.
.. class:: IPv4Network(address, strict=True)
Construct an IPv4 network definition. address can be one of the following:
A string consisting of an IP address and an optional mask, separated by
a slash (/). The IP address is the network address, and the mask
can be either a single number, which means it's a prefix, or a string
representation of an IPv4 address. If it's the latter, the mask is
interpreted as a net mask if it starts with a non-zero field, or as a
host mask if it starts with a zero field, with the single exception of
an all-zero mask which is treated as a net mask. If no mask is provided,
it's considered to be /32.
For example, the following address specifications are equivalent:
192.168.1.0/24, 192.168.1.0/255.255.255.0 and
192.168.1.0/0.0.0.255.
An integer that fits into 32 bits. This is equivalent to a
single-address network, with the network address being address and
the mask being /32.
An integer packed into a :class:bytes object of length 4, big-endian.
The interpretation is similar to an integer address.
A two-tuple of an address description and a netmask, where the address
description is either a string, a 32-bits integer, a 4-bytes packed
integer, or an existing :class:IPv4Address object; and the netmask is either
an integer representing the prefix length (e.g. 24) or a string
representing the prefix mask (e.g. 255.255.255.0).
An :exc:AddressValueError is raised if address is not a valid IPv4
address. A :exc:NetmaskValueError is raised if the mask is not valid for
an IPv4 address.
If strict is True and host bits are set in the supplied address,
then :exc:ValueError is raised. Otherwise, the host bits are masked out
to determine the appropriate network address.
Unless stated otherwise, all network methods accepting other network/address
objects will raise :exc:TypeError if the argument's IP version is
incompatible to self.
.. versionchanged:: 3.5
Added the two-tuple form for the *address* constructor parameter.
.. attribute:: version .. attribute:: max_prefixlen
Refer to the corresponding attribute documentation in
:class:`IPv4Address`.
.. attribute:: is_multicast .. attribute:: is_private .. attribute:: is_unspecified .. attribute:: is_reserved .. attribute:: is_loopback .. attribute:: is_link_local
These attributes are true for the network as a whole if they are true
for both the network address and the broadcast address.
.. attribute:: network_address
The network address for the network. The network address and the
prefix length together uniquely define a network.
.. attribute:: broadcast_address
The broadcast address for the network. Packets sent to the broadcast
address should be received by every host on the network.
.. attribute:: hostmask
The host mask, as an :class:`IPv4Address` object.
.. attribute:: netmask
The net mask, as an :class:`IPv4Address` object.
.. attribute:: with_prefixlen .. attribute:: compressed .. attribute:: exploded
A string representation of the network, with the mask in prefix
notation.
``with_prefixlen`` and ``compressed`` are always the same as
``str(network)``.
``exploded`` uses the exploded form the network address.
.. attribute:: with_netmask
A string representation of the network, with the mask in net mask
notation.
.. attribute:: with_hostmask
A string representation of the network, with the mask in host mask
notation.
.. attribute:: num_addresses
The total number of addresses in the network.
.. attribute:: prefixlen
Length of the network prefix, in bits.
.. method:: hosts()
Returns an iterator over the usable hosts in the network. The usable
hosts are all the IP addresses that belong to the network, except the
network address itself and the network broadcast address. For networks
with a mask length of 31, the network address and network broadcast
address are also included in the result. Networks with a mask of 32
will return a list containing the single host address.
>>> list(ip_network('192.0.2.0/29').hosts()) #doctest: +NORMALIZE_WHITESPACE
[IPv4Address('192.0.2.1'), IPv4Address('192.0.2.2'),
IPv4Address('192.0.2.3'), IPv4Address('192.0.2.4'),
IPv4Address('192.0.2.5'), IPv4Address('192.0.2.6')]
>>> list(ip_network('192.0.2.0/31').hosts())
[IPv4Address('192.0.2.0'), IPv4Address('192.0.2.1')]
>>> list(ip_network('192.0.2.1/32').hosts())
[IPv4Address('192.0.2.1')]
.. method:: overlaps(other)
``True`` if this network is partly or wholly contained in *other* or
*other* is wholly contained in this network.
.. method:: address_exclude(network)
Computes the network definitions resulting from removing the given
*network* from this one. Returns an iterator of network objects.
Raises :exc:`ValueError` if *network* is not completely contained in
this network.
>>> n1 = ip_network('192.0.2.0/28')
>>> n2 = ip_network('192.0.2.1/32')
>>> list(n1.address_exclude(n2)) #doctest: +NORMALIZE_WHITESPACE
[IPv4Network('192.0.2.8/29'), IPv4Network('192.0.2.4/30'),
IPv4Network('192.0.2.2/31'), IPv4Network('192.0.2.0/32')]
.. method:: subnets(prefixlen_diff=1, new_prefix=None)
The subnets that join to make the current network definition, depending
on the argument values. *prefixlen_diff* is the amount our prefix
length should be increased by. *new_prefix* is the desired new
prefix of the subnets; it must be larger than our prefix. One and
only one of *prefixlen_diff* and *new_prefix* must be set. Returns an
iterator of network objects.
>>> list(ip_network('192.0.2.0/24').subnets())
[IPv4Network('192.0.2.0/25'), IPv4Network('192.0.2.128/25')]
>>> list(ip_network('192.0.2.0/24').subnets(prefixlen_diff=2)) #doctest: +NORMALIZE_WHITESPACE
[IPv4Network('192.0.2.0/26'), IPv4Network('192.0.2.64/26'),
IPv4Network('192.0.2.128/26'), IPv4Network('192.0.2.192/26')]
>>> list(ip_network('192.0.2.0/24').subnets(new_prefix=26)) #doctest: +NORMALIZE_WHITESPACE
[IPv4Network('192.0.2.0/26'), IPv4Network('192.0.2.64/26'),
IPv4Network('192.0.2.128/26'), IPv4Network('192.0.2.192/26')]
>>> list(ip_network('192.0.2.0/24').subnets(new_prefix=23))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
raise ValueError('new prefix must be longer')
ValueError: new prefix must be longer
>>> list(ip_network('192.0.2.0/24').subnets(new_prefix=25))
[IPv4Network('192.0.2.0/25'), IPv4Network('192.0.2.128/25')]
.. method:: supernet(prefixlen_diff=1, new_prefix=None)
The supernet containing this network definition, depending on the
argument values. *prefixlen_diff* is the amount our prefix length
should be decreased by. *new_prefix* is the desired new prefix of
the supernet; it must be smaller than our prefix. One and only one
of *prefixlen_diff* and *new_prefix* must be set. Returns a single
network object.
>>> ip_network('192.0.2.0/24').supernet()
IPv4Network('192.0.2.0/23')
>>> ip_network('192.0.2.0/24').supernet(prefixlen_diff=2)
IPv4Network('192.0.0.0/22')
>>> ip_network('192.0.2.0/24').supernet(new_prefix=20)
IPv4Network('192.0.0.0/20')
.. method:: subnet_of(other)
Return ``True`` if this network is a subnet of *other*.
>>> a = ip_network('192.168.1.0/24')
>>> b = ip_network('192.168.1.128/30')
>>> b.subnet_of(a)
True
.. versionadded:: 3.7
.. method:: supernet_of(other)
Return ``True`` if this network is a supernet of *other*.
>>> a = ip_network('192.168.1.0/24')
>>> b = ip_network('192.168.1.128/30')
>>> a.supernet_of(b)
True
.. versionadded:: 3.7
.. method:: compare_networks(other)
Compare this network to *other*. In this comparison only the network
addresses are considered; host bits aren't. Returns either ``-1``,
``0`` or ``1``.
>>> ip_network('192.0.2.1/32').compare_networks(ip_network('192.0.2.2/32'))
-1
>>> ip_network('192.0.2.1/32').compare_networks(ip_network('192.0.2.0/32'))
1
>>> ip_network('192.0.2.1/32').compare_networks(ip_network('192.0.2.1/32'))
0
.. deprecated:: 3.7
It uses the same ordering and comparison algorithm as "<", "==", and ">"
.. class:: IPv6Network(address, strict=True)
Construct an IPv6 network definition. address can be one of the following:
A string consisting of an IP address and an optional prefix length,
separated by a slash (/). The IP address is the network address,
and the prefix length must be a single number, the prefix. If no
prefix length is provided, it's considered to be /128.
Note that currently expanded netmasks are not supported. That means
2001:db00::0/24 is a valid argument while 2001:db00::0/ffff:ff00::
is not.
An integer that fits into 128 bits. This is equivalent to a
single-address network, with the network address being address and
the mask being /128.
An integer packed into a :class:bytes object of length 16, big-endian.
The interpretation is similar to an integer address.
A two-tuple of an address description and a netmask, where the address
description is either a string, a 128-bits integer, a 16-bytes packed
integer, or an existing :class:IPv6Address object; and the netmask is an
integer representing the prefix length.
An :exc:AddressValueError is raised if address is not a valid IPv6
address. A :exc:NetmaskValueError is raised if the mask is not valid for
an IPv6 address.
If strict is True and host bits are set in the supplied address,
then :exc:ValueError is raised. Otherwise, the host bits are masked out
to determine the appropriate network address.
.. versionchanged:: 3.5
Added the two-tuple form for the *address* constructor parameter.
.. attribute:: version .. attribute:: max_prefixlen .. attribute:: is_multicast .. attribute:: is_private .. attribute:: is_unspecified .. attribute:: is_reserved .. attribute:: is_loopback .. attribute:: is_link_local .. attribute:: network_address .. attribute:: broadcast_address .. attribute:: hostmask .. attribute:: netmask .. attribute:: with_prefixlen .. attribute:: compressed .. attribute:: exploded .. attribute:: with_netmask .. attribute:: with_hostmask .. attribute:: num_addresses .. attribute:: prefixlen .. method:: hosts()
Returns an iterator over the usable hosts in the network. The usable
hosts are all the IP addresses that belong to the network, except the
Subnet-Router anycast address. For networks with a mask length of 127,
the Subnet-Router anycast address is also included in the result.
Networks with a mask of 128 will return a list containing the
single host address.
.. method:: overlaps(other) .. method:: address_exclude(network) .. method:: subnets(prefixlen_diff=1, new_prefix=None) .. method:: supernet(prefixlen_diff=1, new_prefix=None) .. method:: subnet_of(other) .. method:: supernet_of(other) .. method:: compare_networks(other)
Refer to the corresponding attribute documentation in
:class:`IPv4Network`.
.. attribute:: is_site_local
This attribute is true for the network as a whole if it is true
for both the network address and the broadcast address.
Operators ^^^^^^^^^
Network objects support some operators. Unless stated otherwise, operators can only be applied between compatible objects (i.e. IPv4 with IPv4, IPv6 with IPv6).
Logical operators """""""""""""""""
Network objects can be compared with the usual set of logical operators. Network objects are ordered first by network address, then by net mask.
Iteration """""""""
Network objects can be iterated to list all the addresses belonging to the
network. For iteration, all hosts are returned, including unusable hosts
(for usable hosts, use the :meth:~IPv4Network.hosts method). An
example::
for addr in IPv4Network('192.0.2.0/28'): ... addr ... IPv4Address('192.0.2.0') IPv4Address('192.0.2.1') IPv4Address('192.0.2.2') IPv4Address('192.0.2.3') IPv4Address('192.0.2.4') IPv4Address('192.0.2.5') IPv4Address('192.0.2.6') IPv4Address('192.0.2.7') IPv4Address('192.0.2.8') IPv4Address('192.0.2.9') IPv4Address('192.0.2.10') IPv4Address('192.0.2.11') IPv4Address('192.0.2.12') IPv4Address('192.0.2.13') IPv4Address('192.0.2.14') IPv4Address('192.0.2.15')
Networks as containers of addresses """""""""""""""""""""""""""""""""""
Network objects can act as containers of addresses. Some examples::
IPv4Network('192.0.2.0/28')[0] IPv4Address('192.0.2.0') IPv4Network('192.0.2.0/28')[15] IPv4Address('192.0.2.15') IPv4Address('192.0.2.6') in IPv4Network('192.0.2.0/28') True IPv4Address('192.0.3.6') in IPv4Network('192.0.2.0/28') False
Interface objects are :term:hashable, so they can be used as keys in
dictionaries.
.. class:: IPv4Interface(address)
Construct an IPv4 interface. The meaning of address is as in the
constructor of :class:IPv4Network, except that arbitrary host addresses
are always accepted.
:class:IPv4Interface is a subclass of :class:IPv4Address, so it inherits
all the attributes from that class. In addition, the following attributes
are available:
.. attribute:: ip
The address (:class:`IPv4Address`) without network information.
>>> interface = IPv4Interface('192.0.2.5/24')
>>> interface.ip
IPv4Address('192.0.2.5')
.. attribute:: network
The network (:class:`IPv4Network`) this interface belongs to.
>>> interface = IPv4Interface('192.0.2.5/24')
>>> interface.network
IPv4Network('192.0.2.0/24')
.. attribute:: with_prefixlen
A string representation of the interface with the mask in prefix notation.
>>> interface = IPv4Interface('192.0.2.5/24')
>>> interface.with_prefixlen
'192.0.2.5/24'
.. attribute:: with_netmask
A string representation of the interface with the network as a net mask.
>>> interface = IPv4Interface('192.0.2.5/24')
>>> interface.with_netmask
'192.0.2.5/255.255.255.0'
.. attribute:: with_hostmask
A string representation of the interface with the network as a host mask.
>>> interface = IPv4Interface('192.0.2.5/24')
>>> interface.with_hostmask
'192.0.2.5/0.0.0.255'
.. class:: IPv6Interface(address)
Construct an IPv6 interface. The meaning of address is as in the
constructor of :class:IPv6Network, except that arbitrary host addresses
are always accepted.
:class:IPv6Interface is a subclass of :class:IPv6Address, so it inherits
all the attributes from that class. In addition, the following attributes
are available:
.. attribute:: ip .. attribute:: network .. attribute:: with_prefixlen .. attribute:: with_netmask .. attribute:: with_hostmask
Refer to the corresponding attribute documentation in
:class:`IPv4Interface`.
Operators ^^^^^^^^^
Interface objects support some operators. Unless stated otherwise, operators can only be applied between compatible objects (i.e. IPv4 with IPv4, IPv6 with IPv6).
Logical operators """""""""""""""""
Interface objects can be compared with the usual set of logical operators.
For equality comparison (== and !=), both the IP address and network
must be the same for the objects to be equal. An interface will not compare
equal to any address or network object.
For ordering (<, >, etc) the rules are different. Interface and
address objects with the same IP version can be compared, and the address
objects will always sort before the interface objects. Two interface objects
are first compared by their networks and, if those are the same, then by their
IP addresses.
The module also provides the following module level functions:
.. function:: v4_int_to_packed(address)
Represent an address as 4 packed bytes in network (big-endian) order.
address is an integer representation of an IPv4 IP address. A
:exc:ValueError is raised if the integer is negative or too large to be an
IPv4 IP address.
ipaddress.ip_address(3221225985) IPv4Address('192.0.2.1') ipaddress.v4_int_to_packed(3221225985) b'\xc0\x00\x02\x01'
.. function:: v6_int_to_packed(address)
Represent an address as 16 packed bytes in network (big-endian) order.
address is an integer representation of an IPv6 IP address. A
:exc:ValueError is raised if the integer is negative or too large to be an
IPv6 IP address.
.. function:: summarize_address_range(first, last)
Return an iterator of the summarized network range given the first and last
IP addresses. first is the first :class:IPv4Address or
:class:IPv6Address in the range and last is the last :class:IPv4Address
or :class:IPv6Address in the range. A :exc:TypeError is raised if
first or last are not IP addresses or are not of the same version. A
:exc:ValueError is raised if last is not greater than first or if
first address version is not 4 or 6.
[ipaddr for ipaddr in ipaddress.summarize_address_range( ... ipaddress.IPv4Address('192.0.2.0'), ... ipaddress.IPv4Address('192.0.2.130'))] [IPv4Network('192.0.2.0/25'), IPv4Network('192.0.2.128/31'), IPv4Network('192.0.2.130/32')]
.. function:: collapse_addresses(addresses)
Return an iterator of the collapsed :class:IPv4Network or
:class:IPv6Network objects. addresses is an :term:iterable of
:class:IPv4Network or :class:IPv6Network objects. A :exc:TypeError is
raised if addresses contains mixed version objects.
[ipaddr for ipaddr in ... ipaddress.collapse_addresses([ipaddress.IPv4Network('192.0.2.0/25'), ... ipaddress.IPv4Network('192.0.2.128/25')])] [IPv4Network('192.0.2.0/24')]
.. function:: get_mixed_type_key(obj)
Return a key suitable for sorting between networks and addresses. Address and Network objects are not sortable by default; they're fundamentally different, so the expression::
IPv4Address('192.0.2.0') <= IPv4Network('192.0.2.0/24')
doesn't make sense. There are some times however, where you may wish to
have :mod:!ipaddress sort these anyway. If you need to do this, you can use
this function as the key argument to :func:sorted.
obj is either a network or address object.
To support more specific error reporting from class constructors, the module defines the following exceptions:
.. exception:: AddressValueError(ValueError)
Any value error related to the address.
.. exception:: NetmaskValueError(ValueError)
Any value error related to the net mask.