Adds support for pytz timezones in constructor

Author: sdispater

pendulum/pendulum.py

@@ -102,6 +102,15 @@ def _safe_create_datetime_zone(cls, obj):
             timezone_offset = obj * 60 * 60
 
             return FixedTimezone(timezone_offset)
+        elif isinstance(obj, datetime.tzinfo) and not isinstance(obj, Timezone):
+            # pytz
+            if hasattr(obj, 'localize'):
+                obj = obj.zone
+            else:
+                # We have no sure way to figure out
+                # the timezone name, we raise an error
+
+                raise ValueError('Unsupported timezone {}'.format(obj))
 
         tz = cls._timezone(obj)
 

tests/pendulum_tests/test_create_from_timestamp.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 
+import pytz
 from pendulum import Pendulum, timezone
 
 from .. import AbstractTestCase
@@ -21,3 +22,8 @@ def test_create_from_timestamp_with_timezone(self):
         d = Pendulum.create_from_timestamp(0, timezone('America/Toronto'))
         self.assertEqual('America/Toronto', d.timezone_name)
         self.assertPendulum(d, 1969, 12, 31, 19, 0, 0)
+
+    def test_create_from_timestamp_with_pytz_timezone(self):
+        d = Pendulum.create_from_timestamp(0, pytz.timezone('America/Toronto'))
+        self.assertEqual('America/Toronto', d.timezone_name)
+        self.assertPendulum(d, 1969, 12, 31, 19, 0, 0)