Fix deepcopy() raising an error when using UTC

Author: sdispater

CHANGELOG.md

@@ -5,7 +5,8 @@
 ### Fixed
 
 - Fixed an offset error when subtracting datetimes in the same timezone.
-- Fixed wrong value returned by `tzname()` for the UTC timezone
+- Fixed wrong value returned by `tzname()` for the UTC timezone.
+- Fixed `deepcopy()` raising an error when using `UTC`.
 
 
 ## [1.4.1] - 2018-02-05

pendulum/tz/timezone_info.py

@@ -134,4 +134,8 @@ def dst(self, dt):
     def fromutc(self, dt):
         return dt.replace(tzinfo=self)
 
+    def __getinitargs__(self):
+        return ()
+
+
 UTC = _UTC()

tests/pendulum_tests/test_behavior.py

@@ -125,6 +125,11 @@ def test_deepcopy_datetime(self):
 
         self.assertEqual(dt._datetime, deepcopy(dt._datetime))
 
+    def test_deepcopy_datetime_utcnow(self):
+        dt = pendulum.utcnow()
+
+        self.assertEqual(dt._datetime, deepcopy(dt._datetime))
+
     def test_pickle_timezone(self):
         dt1 = pendulum.timezone('Europe/Amsterdam')
         s = pickle.dumps(dt1)