the io module was added in 2.6 (I know not really, but the end user isn't going to...

diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index 4fb79b9d40bd1b3295ff5152b6ec39bc5e360163..2e23653a0649618dcdb16fba9e1576c22dd6c2bf 100644 (file)
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -7,6 +7,7 @@
 .. moduleauthor:: Mike Verdone <mike.verdone@gmail.com>
 .. moduleauthor:: Mark Russell <mark.russell@zen.co.uk>
 .. sectionauthor:: Benjamin Peterson
+.. versionadded:: 2.6
 
 The :mod:`io` module provides the Python interfaces to stream handling.  The
 builtin :func:`open` function is defined in this module.