gh-62172: Document classify_class_attrs(), getabsfile(), and indentsize() in inspect

Author: sreehariannam

Doc/library/inspect.rst

@@ -736,6 +736,15 @@ Retrieving source code
    class, or function.
 
 
+.. function:: getabsfile(object)
+
+   Return an absolute path to the (text or binary) file in which an object
+   was defined, normalized for the current platform using
+   :func:`os.path.normcase`.  This uses :func:`getsourcefile` and falls back
+   to :func:`getfile` if no source file can be found.  The idea is for each
+   object to have a unique origin.
+
+
 .. function:: getmodule(object)
 
    Try to guess which module an object was defined in. Return ``None``
@@ -791,6 +800,12 @@ Retrieving source code
    expanded to spaces.
 
 
+.. function:: indentsize(line)
+
+   Return the indentation size, in number of spaces, at the start of a line
+   of text, expanding tabs using :meth:`str.expandtabs`.
+
+
 .. _inspect-signature-object:
 
 Introspecting callables with the Signature object
@@ -1220,6 +1235,20 @@ function.
 Classes and functions
 ---------------------
 
+.. function:: classify_class_attrs(cls)
+
+   Return a list of ``Attribute(name, kind, defining_class, object)`` named
+   tuples for each attribute reported by ``dir(cls)``.  *kind* is one of
+   ``'class method'``, ``'static method'``, ``'property'``, ``'method'`` or
+   ``'data'``, and *defining_class* is the class in *cls*'s :term:`MRO` (or
+   its metaclass's MRO) that defines the attribute.  *object* is the
+   attribute value, retrieved with :func:`getattr` where possible, falling
+   back to a lookup in the defining class's ``__dict__``.
+
+   This is used internally by :mod:`pydoc` to build the class documentation
+   shown by :func:`help`.
+
+
 .. function:: getclasstree(classes, unique=False)
 
    Arrange the given list of classes into a hierarchy of nested lists. Where a