From 79b8d42cc2629b53a7a696171221d7bd3a79b30c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jarno=20Saarim=C3=A4ki?= <jarno.saarimaki@eniram.fi>
Date: Fri, 27 Nov 2015 15:58:50 +0200
Subject: isodate.UTC remains the same object in a pickle

---
 src/isodate/tzinfo.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/isodate/tzinfo.py')

diff --git a/src/isodate/tzinfo.py b/src/isodate/tzinfo.py
index b41f058..573b7b8 100644
--- a/src/isodate/tzinfo.py
+++ b/src/isodate/tzinfo.py
@@ -36,10 +36,24 @@ class Utc(tzinfo):
         '''
         return ZERO
 
+    def __reduce__(self):
+        '''
+        When unpickling a Utc object, return the default instance below, UTC.
+        '''
+        return _Utc, ()
+
+
 UTC = Utc()
 # the default instance for UTC.
 
 
+def _Utc():
+    '''
+    Helper function for unpickling a Utc object.
+    '''
+    return UTC
+
+
 class FixedOffset(tzinfo):
     '''
     A class building tzinfo objects for fixed-offset time zones.
-- 
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