Merged revisions 76805 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r76805 | benjamin.peterson | 2009-12-13 13:19:07 -0600 (Sun, 13 Dec 2009) | 7 lines

  accept None as the same as having passed no argument in file types #7349

  This is for consistency with imitation file objects like StringIO and BytesIO.

  This commit also adds a few tests, where they were lacking for concerned
  methods.
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diff --git a/Misc/NEWS b/Misc/NEWS
index dee6df4..335460a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -157,6 +157,10 @@
 Library
 -------
 
+- Issue #7349: Make methods of file objects in the io module accept None as an
+  argument where file-like objects (ie StringIO and BytesIO) accept them to mean
+  the same as passing no argument.
+
 - Issue #7357: tarfile no longer suppresses fatal extraction errors by
   default.