diff -r 7ee70787a78e Doc/library/trace.rst
--- a/Doc/library/trace.rst	Mon Feb 06 09:23:02 2017 +0100
+++ b/Doc/library/trace.rst	Mon Feb 06 09:51:34 2017 +0100
@@ -205,3 +205,8 @@
    r = tracer.results()
    r.write_results(show_missing=True, coverdir=".")
 
+
+.. seealso::
+
+   Third party library `Coverage.py <https://coverage.readthedocs.io/>`_
+      Tool for measuring code coverage of Python programs.