Do these look functionally equivalent

gistfile1.py

#python 2.7
        with warnings.catch_warnings(record=False) as w:
            soup = BeautifulStoneSoup("<b />")
            self.assertEqual(u"<b/>", unicode(soup.b))

#python 2.5
        warnings_manager = warnings.catch_warnings(record=True)
        w = warnings_manager.__enter__()
        try:
            soup = BeautifulStoneSoup("<b />")
            self.assertEqual(u"<b/>", unicode(soup.b))
        except Exception, e:
            warnings_manager.__exit__(sys.exc_info())
            raise
        else:
            warnings_manager.__exit__(None, None, None)