Merged revisions 71037 via svnmerge from

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  r71037 | r.david.murray | 2009-04-02 00:34:04 -0400 (Thu, 02 Apr 2009) | 6 lines

  Clarify that datetime strftime does not produce leap seconds and datetime
  strptime does not accept it in the strftime behavior section of the
  datetime docs.

  Closes issue 2568.
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Doc/library/datetime.rst

@@ -1629,8 +1629,12 @@ Notes:
    the output hour field if the ``%I`` directive is used to parse the hour.
 
 (3)
-   The range really is ``0`` to ``61``; this accounts for leap seconds and the
-   (very rare) double leap seconds.
+   The range really is ``0`` to ``61``; according to the Posix standard this
+   accounts for leap seconds and the (very rare) double leap seconds.
+   The :mod:`time` module may produce and does accept leap seconds since
+   it is based on the Posix standard, but the :mod:`datetime` module
+   does not accept leap seconds in :func:`strptime` input nor will it
+   produce them in :func:`strftime` output.
 
 (4)
    When used with the :func:`strptime` function, ``%U`` and ``%W`` are only used in