created timedelta to seconds function because python2.6-datetime doesn't support .total_seconds()

src/croniter/croniter.py

@@ -155,7 +155,7 @@ class croniter(object):
         if d.tzinfo is not None:
             d = d.replace(tzinfo=None) - d.utcoffset()
 
-        return (d - datetime.datetime(1970, 1, 1)).total_seconds()
+        return self._timedelta_to_seconds(d - datetime.datetime(1970, 1, 1))
 
     def _timestamp_to_datetime(self, timestamp):
         """
@@ -167,6 +167,15 @@ class croniter(object):
 
         return result
 
+    def _timedelta_to_seconds(self, td):
+        """
+        Converts a 'datetime.timedelta' object `td` into seconds contained in
+        the duration
+        """
+        return (td.microseconds + (td.seconds + td.days * 24 * 3600) * 10**6) \
+            / 10**6
+
+
     # iterator protocol, to enable direct use of croniter
     # objects in a loop, like "for dt in croniter('5 0 * * *'): ..."
     # or for combining multiple croniters into single

src/croniter/tests/test_croniter.py

@@ -414,7 +414,7 @@ class CroniterTest(base.TestCase):
         for expected_date, expected_offset in expected_schedule:
             d = callback()
             self.assertEqual(expected_date, d.replace(tzinfo=None))
-            self.assertEqual(expected_offset, d.utcoffset().total_seconds())
+            self.assertEqual(expected_offset, croniter._timedelta_to_seconds(d.utcoffset()))
 
     def testTimezoneWinterTime(self):
         tz = pytz.timezone('Europe/Athens')