Fix obscure failures of datetime-related tests due to the datetime tests failing to restore the system state completely after testing the pure-Python versions.

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r86596 | ezio.melotti | 2010-11-20 21:04:17 +0200 (Sat, 20 Nov 2010) | 1 line

  #9424: Replace deprecated assert* methods in the Python test suite.
........

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r86596 | ezio.melotti | 2010-11-20 21:04:17 +0200 (Sat, 20 Nov 2010) | 1 line

  #9424: Replace deprecated assert* methods in the Python test suite.
........

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r82578 | alexander.belopolsky | 2010-07-05 11:05:33 -0400 (Mon, 05 Jul 2010) | 1 line

  Added more tests for utctimetuple()
........

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r82152 | alexander.belopolsky | 2010-06-22 10:07:33 -0400 (Tue, 22 Jun 2010) | 1 line

  Added more test cases
........

regression making datetime subclass' strptime return datetime rather
than subclass instances.  Fixed this bug and a few typos.

implementing ``datetime.tzinfo`` interface.

and divided by float and int objects.

svn+ssh://pythondev@svn.python.org/python/branches/py3k

................
  r81560 | alexander.belopolsky | 2010-05-26 16:48:30 -0400 (Wed, 26 May 2010) | 10 lines

  Merged revisions 81559 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r81559 | alexander.belopolsky | 2010-05-26 16:45:37 -0400 (Wed, 26 May 2010) | 3 lines

    Issue #7879: Skip negative timestamps test on any Windows platform
    using unittest.skipIf decorator.
  ........
................

svn+ssh://pythondev@svn.python.org/python/branches/py3k

................
  r81556 | alexander.belopolsky | 2010-05-26 16:00:12 -0400 (Wed, 26 May 2010) | 10 lines

  Merged revisions 81555 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r81555 | alexander.belopolsky | 2010-05-26 15:43:16 -0400 (Wed, 26 May 2010) | 3 lines

    Issue #7879: Do not test negative timestamps on any Windows platform
    including Windows CE.
  ........
................

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81555 | alexander.belopolsky | 2010-05-26 15:43:16 -0400 (Wed, 26 May 2010) | 3 lines

  Issue #7879: Do not test negative timestamps on any Windows platform
  including Windows CE.
........

svn+ssh://pythondev@svn.python.org/python/branches/py3k

................
  r81568 | alexander.belopolsky | 2010-05-27 17:42:58 -0400 (Thu, 27 May 2010) | 10 lines

  Merged revisions 81566 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r81566 | alexander.belopolsky | 2010-05-27 16:55:27 -0400 (Thu, 27 May 2010) | 3 lines

    Issue #7150: Raise OverflowError if the result of adding or subtracting
    timedelta from date or datetime falls outside of the MINYEAR:MAXYEAR range.
  ........
................

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81566 | alexander.belopolsky | 2010-05-27 16:55:27 -0400 (Thu, 27 May 2010) | 3 lines

  Issue #7150: Raise OverflowError if the result of adding or subtracting
  timedelta from date or datetime falls outside of the MINYEAR:MAXYEAR range.
........

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81566 | alexander.belopolsky | 2010-05-27 16:55:27 -0400 (Thu, 27 May 2010) | 3 lines

  Issue #7150: Raise OverflowError if the result of adding or subtracting
  timedelta from date or datetime falls outside of the MINYEAR:MAXYEAR range.
........

timedelta from date or datetime falls outside of the MINYEAR:MAXYEAR range.

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81559 | alexander.belopolsky | 2010-05-26 16:45:37 -0400 (Wed, 26 May 2010) | 3 lines

  Issue #7879: Skip negative timestamps test on any Windows platform
  using unittest.skipIf decorator.
........

using unittest.skipIf decorator.

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81555 | alexander.belopolsky | 2010-05-26 15:43:16 -0400 (Wed, 26 May 2010) | 3 lines

  Issue #7879: Do not test negative timestamps on any Windows platform
  including Windows CE.
........

including Windows CE.

(Backport of r80979 to py3k.)  Thanks Alexander Belopolsky.

computations with integer arithmetic instead of floating point.
td.total_seconds() now agrees with td / timedelta(seconds = 1).

Thanks Alexander Belopolsky for the patch.

Adds support for the three division operations:

  - timedelta / timedelta -> float
  - timedelta // timedelta -> int
  - timedelta % timedelta -> timedelta

also adds support for divmod(timedelta, timedelta).

Patch by Victor Stinner, adapted for py3k and extended by Alexander
Belopolsky.

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r77727 | ezio.melotti | 2010-01-24 18:58:36 +0200 (Sun, 24 Jan 2010) | 1 line

  use assert[Not]IsInstance where appropriate
........