commit 8e9c47a947954c997d4b725f4551d50a1d896722
author Pete Wicken <2273100+JamoBox@users.noreply.github.com> Mon Mar 09 22:33:45 2020 +0000
committer GitHub <noreply@github.com> Mon Mar 09 15:33:45 2020 -0700
tree 72a0d1e8aaf5962503c008323ce8ada7f037e8eb
parent 9229eeee105f19705f72e553cf066751ac47c7b7

bpo-28577: Special case added to IP v4 and v6 hosts for /32 and /128 networks (GH-18757)

The `.hosts()` method now returns the single address present in a /32 or /128 network.

Lib/test/test_ipaddress.py

diff --git a/Lib/test/test_ipaddress.py b/Lib/test/test_ipaddress.py
index f4a4afb..bbb3fc8 100644
--- a/Lib/test/test_ipaddress.py
+++ b/Lib/test/test_ipaddress.py
@@ -1424,6 +1424,15 @@
         self.assertEqual(list(ipaddress.ip_network(str_args).hosts()),
                          list(ipaddress.ip_network(tpl_args).hosts()))
 
+        # special case where the network is a /32
+        addrs = [ipaddress.IPv4Address('1.2.3.4')]
+        str_args = '1.2.3.4/32'
+        tpl_args = ('1.2.3.4', 32)
+        self.assertEqual(addrs, list(ipaddress.ip_network(str_args).hosts()))
+        self.assertEqual(addrs, list(ipaddress.ip_network(tpl_args).hosts()))
+        self.assertEqual(list(ipaddress.ip_network(str_args).hosts()),
+                         list(ipaddress.ip_network(tpl_args).hosts()))
+
         addrs = [ipaddress.IPv6Address('2001:658:22a:cafe::'),
                  ipaddress.IPv6Address('2001:658:22a:cafe::1')]
         str_args = '2001:658:22a:cafe::/127'
@@ -1432,10 +1441,10 @@
         self.assertEqual(addrs, list(ipaddress.ip_network(tpl_args).hosts()))
         self.assertEqual(list(ipaddress.ip_network(str_args).hosts()),
                          list(ipaddress.ip_network(tpl_args).hosts()))
-        addrs = [ipaddress.IPv6Address('2001:658:22a:cafe::'),
-                 ipaddress.IPv6Address('2001:658:22a:cafe::1')]
-        str_args = '2001:658:22a:cafe::/127'
-        tpl_args = ('2001:658:22a:cafe::', 127)
+
+        addrs = [ipaddress.IPv6Address('2001:658:22a:cafe::1'), ]
+        str_args = '2001:658:22a:cafe::1/128'
+        tpl_args = ('2001:658:22a:cafe::1', 128)
         self.assertEqual(addrs, list(ipaddress.ip_network(str_args).hosts()))
         self.assertEqual(addrs, list(ipaddress.ip_network(tpl_args).hosts()))
         self.assertEqual(list(ipaddress.ip_network(str_args).hosts()),