change title of added reference

Author: adqm

Doc/reference/datamodel.rst

@@ -2911,7 +2911,7 @@ automatic property creation, proxies, frameworks, and automatic resource
 locking/synchronization.
 
 
-.. _custom-instance-subclass:
+.. _customize-instance-subclass-checks:
 
 Customizing instance and subclass checks
 ----------------------------------------

Doc/tools/extensions/pydoc_topics.py

@@ -47,7 +47,7 @@
     "continue",
     "conversions",
     "customization",
-    "custom-instance-subclass",
+    "customize-instance-subclass-checks",
     "debugger",
     "del",
     "dict",

Lib/pydoc.py

@@ -1880,7 +1880,7 @@ def collect_dunders(symbols):
         '__instancecheck__', '__subclasscheck__'
     ]
     for d in instance_dunders:
-        dunders[d] = ('custom-instance-subclass', 'SPECIALNAMES')
+        dunders[d] = ('customize-instance-subclass-checks', 'SPECIALNAMES')
 
     sequence_dunders = [
        '__len__', '__length_hint__', '__getitem__', '__setitem__',

Lib/pydoc_data/topics.py

@@ -1,4 +1,4 @@
-# Autogenerated by Sphinx on Mon Aug 18 00:55:48 2025
+# Autogenerated by Sphinx on Mon Aug 18 01:09:13 2025
 # as part of the release process.
 
 topics = {
@@ -4083,43 +4083,6 @@ def f() -> annotation: ...
 Some additional rules apply for certain operators (e.g., a string as a
 left argument to the ‘%’ operator).  Extensions must define their own
 conversion behavior.
-''',
-    'custom-instance-subclass': r'''Customizing instance and subclass checks
-****************************************
-
-The following methods are used to override the default behavior of the
-"isinstance()" and "issubclass()" built-in functions.
-
-In particular, the metaclass "abc.ABCMeta" implements these methods in
-order to allow the addition of Abstract Base Classes (ABCs) as
-“virtual base classes” to any class or type (including built-in
-types), including other ABCs.
-
-type.__instancecheck__(self, instance)
-
-   Return true if *instance* should be considered a (direct or
-   indirect) instance of *class*. If defined, called to implement
-   "isinstance(instance, class)".
-
-type.__subclasscheck__(self, subclass)
-
-   Return true if *subclass* should be considered a (direct or
-   indirect) subclass of *class*.  If defined, called to implement
-   "issubclass(subclass, class)".
-
-Note that these methods are looked up on the type (metaclass) of a
-class.  They cannot be defined as class methods in the actual class.
-This is consistent with the lookup of special methods that are called
-on instances, only in this case the instance is itself a class.
-
-See also:
-
-  **PEP 3119** - Introducing Abstract Base Classes
-     Includes the specification for customizing "isinstance()" and
-     "issubclass()" behavior through "__instancecheck__()" and
-     "__subclasscheck__()", with motivation for this functionality in
-     the context of adding Abstract Base Classes (see the "abc"
-     module) to the language.
 ''',
     'customization': r'''Basic customization
 *******************
@@ -4429,6 +4392,43 @@ def __hash__(self):
    considered true if its result is nonzero.  If a class defines
    neither "__len__()" nor "__bool__()" (which is true of the "object"
    class itself), all its instances are considered true.
+''',
+    'customize-instance-subclass-checks': r'''Customizing instance and subclass checks
+****************************************
+
+The following methods are used to override the default behavior of the
+"isinstance()" and "issubclass()" built-in functions.
+
+In particular, the metaclass "abc.ABCMeta" implements these methods in
+order to allow the addition of Abstract Base Classes (ABCs) as
+“virtual base classes” to any class or type (including built-in
+types), including other ABCs.
+
+type.__instancecheck__(self, instance)
+
+   Return true if *instance* should be considered a (direct or
+   indirect) instance of *class*. If defined, called to implement
+   "isinstance(instance, class)".
+
+type.__subclasscheck__(self, subclass)
+
+   Return true if *subclass* should be considered a (direct or
+   indirect) subclass of *class*.  If defined, called to implement
+   "issubclass(subclass, class)".
+
+Note that these methods are looked up on the type (metaclass) of a
+class.  They cannot be defined as class methods in the actual class.
+This is consistent with the lookup of special methods that are called
+on instances, only in this case the instance is itself a class.
+
+See also:
+
+  **PEP 3119** - Introducing Abstract Base Classes
+     Includes the specification for customizing "isinstance()" and
+     "issubclass()" behavior through "__instancecheck__()" and
+     "__subclasscheck__()", with motivation for this functionality in
+     the context of adding Abstract Base Classes (see the "abc"
+     module) to the language.
 ''',
     'debugger': r'''"pdb" — The Python Debugger
 ***************************