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/trace.rst b/Doc/library/trace.rst
index f90f44b..878fbed 100644
--- a/Doc/library/trace.rst
+++ b/Doc/library/trace.rst
@@ -10,6 +10,10 @@
 list functions executed during a program run.  It can be used in another program
 or from the command line.
 
+.. seealso::
+
+   Latest version of the :source:`trace module Python source code
+   <Lib/trace.py>`
 
 .. _trace-cli: