diff --git a/Doc/tools/sphinxext/patchlevel.py b/Doc/tools/sphinxext/patchlevel.py
index 971ea61..cb9e35c 100644
--- a/Doc/tools/sphinxext/patchlevel.py
+++ b/Doc/tools/sphinxext/patchlevel.py
@@ -66,3 +66,6 @@
         print >>sys.stderr, 'Can\'t get version info from Include/patchlevel.h, ' \
               'using version of this interpreter (%s).' % release
         return version, release
+
+if __name__ == '__main__':
+    print get_header_version_info('.')[1]