convert docstrings to triple-double-quoted

attic/repository.py

@@ -41,7 +41,7 @@ class Repository(object):
         """{} is not a valid repository"""
 
     class CheckNeeded(Error):
-        '''Inconsistency detected. Please run "attic check {}"'''
+        """Inconsistency detected. Please run "attic check {}"."""
 
     class ObjectNotFound(Error):
         """Object with key {} not found in repository {}"""

attic/testsuite/helpers.py

@@ -139,7 +139,7 @@ class PruneSplitTestCase(AtticTestCase):
     def test(self):
 
         def local_to_UTC(month, day):
-            'Convert noon on the month and day in 2013 to UTC.'
+            """Convert noon on the month and day in 2013 to UTC."""
             seconds = mktime(strptime('2013-%02d-%02d 12:00' % (month, day), '%Y-%m-%d %H:%M'))
             return datetime.fromtimestamp(seconds, tz=timezone.utc)