Fixes pickling/unpickling of Pendulum instances with fixed timezone.

Author: sdispater

pendulum/pendulum.py

@@ -2236,10 +2236,16 @@ def __getnewargs__(self):
         return(self, )
 
     def _getstate(self):
+        tz = self.timezone_name
+
+        # Fix for fixed timezones not being properly unpickled
+        if isinstance(self.tz, FixedTimezone):
+            tz = self.offset_hours
+
         return (
             self.year, self.month, self.day,
             self.hour, self.minute, self.second, self.microsecond,
-            self.timezone_name
+            tz
         )
 
     def __reduce__(self):

tests/pendulum_tests/test_behavior.py

@@ -91,3 +91,10 @@ def test_pickle(self):
         dt2 = pickle.loads(s)
 
         self.assertEqual(dt1, dt2)
+
+    def test_pickle_with_integer_tzinfo(self):
+        dt1 = Pendulum(2016, 8, 27, 12, 34, 56, 123456, 0)
+        s = pickle.dumps(dt1)
+        dt2 = pickle.loads(s)
+
+        self.assertEqual(dt1, dt2)