Issue #25802: Deprecate load_module() on importlib.machinery.SourceFileLoader and SourcelessFileLoader.

They were the only remaining implementations of load_module() not
documented as deprecated.

Doc/library/importlib.rst

@@ -921,6 +921,10 @@ find and load modules.
       Concrete implementation of :meth:`importlib.abc.Loader.load_module` where
       specifying the name of the module to load is optional.
 
+      .. deprecated:: 3.6
+
+         Use :meth:`importlib.abc.Loader.exec_module` instead.
+
 
 .. class:: SourcelessFileLoader(fullname, path)
 
@@ -960,6 +964,10 @@ find and load modules.
    Concrete implementation of :meth:`importlib.abc.Loader.load_module` where
    specifying the name of the module to load is optional.
 
+   .. deprecated:: 3.6
+
+      Use :meth:`importlib.abc.Loader.exec_module` instead.
+
 
 .. class:: ExtensionFileLoader(fullname, path)
 

Doc/whatsnew/3.6.rst

@@ -189,7 +189,12 @@ become proper keywords in Python 3.7.
 Deprecated Python modules, functions and methods
 ------------------------------------------------
 
-* None yet.
+* :meth:`importlib.machinery.SourceFileLoader` and
+  :meth:`importlib.machinery.SourcelessFileLoader` are now deprecated. They
+  were the only remaining implementations of
+  :meth:`importlib.abc.Loader.load_module` in :mod:`importlib` that had not
+  been deprecated in previous versions of Python in favour of
+  :meth:`importlib.abc.Loader.exec_module`.
 
 
 Deprecated functions and types of the C API

Lib/importlib/_bootstrap_external.py

@@ -655,6 +655,7 @@ class _LoaderBasics:
         _bootstrap._call_with_frames_removed(exec, code, module.__dict__)
 
     def load_module(self, fullname):
+        """This module is deprecated."""
         return _bootstrap._load_module_shim(self, fullname)
 
 

Misc/NEWS

@@ -123,6 +123,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #25802: Document as deprecated the remaining implementations of
+  importlib.abc.Loader.load_module().
+
 - Issue #25928: Add Decimal.as_integer_ratio().
 
 - Issue #25447: Copying the lru_cache() wrapper object now always works,