Provide links to Python source where the code is short, readable and
informative adjunct to the docs.  Forward-port of Raymond's r86225 and
r86245 using the new source reST role added in #10334.
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index 69cc25b..b785fc2 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -15,6 +15,11 @@
 :ref:`string-formatting` section.  Also, see the :mod:`re` module for
 string functions based on regular expressions.
 
+.. seealso::
+
+   Latest version of the :source:`string module Python source code
+   <Lib/string.py>`
+
 
 String constants
 ----------------