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authorCharles Machalow <csm10495@gmail.com>2023-11-05 16:50:31 (GMT)
committerGitHub <noreply@github.com>2023-11-05 16:50:31 (GMT)
commitba8aa1fd3735aa3dd13a36ad8f059a422d25ff37 (patch)
tree37338f169a6502ed9ccb371c07d7e4a23e58aaa6
parent24b5cbd3dce3fe37cdc787ccedd1e73a4f8cfc3c (diff)
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gh-109466: Add ipv6_mapped property to IPv4Address (#109467)
Adds the `IPv4Address.ipv6_mapped` property. Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
-rw-r--r--Doc/library/ipaddress.rst7
-rw-r--r--Doc/whatsnew/3.13.rst6
-rw-r--r--Lib/ipaddress.py10
-rw-r--r--Lib/test/test_ipaddress.py8
-rw-r--r--Misc/NEWS.d/next/Library/2023-09-15-12-30-21.gh-issue-109466.6ah-aw.rst1
5 files changed, 32 insertions, 0 deletions
diff --git a/Doc/library/ipaddress.rst b/Doc/library/ipaddress.rst
index 9c2dff5..1de36b6 100644
--- a/Doc/library/ipaddress.rst
+++ b/Doc/library/ipaddress.rst
@@ -219,6 +219,13 @@ write code that handles both IP versions correctly. Address objects are
``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
diff --git a/Doc/whatsnew/3.13.rst b/Doc/whatsnew/3.13.rst
index f2c1441..e12c2a1 100644
--- a/Doc/whatsnew/3.13.rst
+++ b/Doc/whatsnew/3.13.rst
@@ -185,6 +185,12 @@ and only logged in :ref:`Python Development Mode <devmode>` or on :ref:`Python
built on debug mode <debug-build>`.
(Contributed by Victor Stinner in :gh:`62948`.)
+ipaddress
+---------
+
+* Add the :attr:`ipaddress.IPv4Address.ipv6_mapped` property, which returns the IPv4-mapped IPv6 address.
+ (Contributed by Charles Machalow in :gh:`109466`.)
+
opcode
------
diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
index 68ddfbe..e398cc1 100644
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -1389,6 +1389,16 @@ class IPv4Address(_BaseV4, _BaseAddress):
"""
return self in self._constants._linklocal_network
+ @property
+ def ipv6_mapped(self):
+ """Return the IPv4-mapped IPv6 address.
+
+ Returns:
+ The IPv4-mapped IPv6 address per RFC 4291.
+
+ """
+ return IPv6Address(f'::ffff:{self}')
+
class IPv4Interface(IPv4Address):
diff --git a/Lib/test/test_ipaddress.py b/Lib/test/test_ipaddress.py
index 33a0f98..b4952ac 100644
--- a/Lib/test/test_ipaddress.py
+++ b/Lib/test/test_ipaddress.py
@@ -303,6 +303,14 @@ class AddressTestCase_v4(BaseTestCase, CommonTestMixin_v4):
def test_weakref(self):
weakref.ref(self.factory('192.0.2.1'))
+ def test_ipv6_mapped(self):
+ self.assertEqual(ipaddress.IPv4Address('192.168.1.1').ipv6_mapped,
+ ipaddress.IPv6Address('::ffff:192.168.1.1'))
+ self.assertEqual(ipaddress.IPv4Address('192.168.1.1').ipv6_mapped,
+ ipaddress.IPv6Address('::ffff:c0a8:101'))
+ self.assertEqual(ipaddress.IPv4Address('192.168.1.1').ipv6_mapped.ipv4_mapped,
+ ipaddress.IPv4Address('192.168.1.1'))
+
class AddressTestCase_v6(BaseTestCase, CommonTestMixin_v6):
factory = ipaddress.IPv6Address
diff --git a/Misc/NEWS.d/next/Library/2023-09-15-12-30-21.gh-issue-109466.6ah-aw.rst b/Misc/NEWS.d/next/Library/2023-09-15-12-30-21.gh-issue-109466.6ah-aw.rst
new file mode 100644
index 0000000..e8e5be3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-09-15-12-30-21.gh-issue-109466.6ah-aw.rst
@@ -0,0 +1 @@
+Add the :attr:`ipaddress.IPv4Address.ipv6_mapped` property, which retuns the IPv4-mapped IPv6 address.