[Issue 15476] Make "code object" its own entry in the index

Doc/library/marshal.rst

@@ -16,7 +16,6 @@ rarely does). [#]_
 .. index::
    module: pickle
    module: shelve
-   object: code
 
 This is not a general "persistence" module.  For general persistence and
 transfer of Python objects through RPC calls, see the modules :mod:`pickle` and
@@ -34,6 +33,8 @@ supports a substantially wider range of objects than marshal.
    maliciously constructed data.  Never unmarshal data received from an
    untrusted or unauthenticated source.
 
+.. index:: object; code, code object
+
 Not all Python object types are supported; in general, only objects whose value
 is independent from a particular invocation of Python can be written and read by
 this module.  The following types are supported: booleans, integers, floating

Doc/library/stdtypes.rst

@@ -4436,13 +4436,13 @@ attribute, you need to explicitly set it on the underlying function object::
 See :ref:`types` for more information.
 
 
+.. index:: object; code, code object
+
 .. _bltin-code-objects:
 
 Code Objects
 ------------
 
-.. index:: object: code
-
 .. index::
    builtin: compile
    single: __code__ (function object attribute)