X-Git-Url: http://www.git.cypherpunks.ru/?p=pyderasn.git;a=blobdiff_plain;f=pyderasn.py;fp=pyderasn.py;h=d50415b962d078bab5ce192910bc86664d454127;hp=82021efab0391507dfda7e3d53402d71850cc037;hb=9d6b8d2cf5ee8cd06d52456227951083881ae8c8;hpb=c6cf876ed3979538eeb0f0df60512c3feedb4715

diff --git a/pyderasn.py b/pyderasn.py
index 82021ef..d50415b 100755
--- a/pyderasn.py
+++ b/pyderasn.py
@@ -1181,9 +1181,9 @@ except ImportError:  # pragma: no cover
         return what
 
 try:
-    from dateutil.tz import tzutc
+    from dateutil.tz import UTC as tzUTC
 except ImportError:  # pragma: no cover
-    tzutc = None
+    tzUTC = "missing"
 
 
 __version__ = "9.1"
@@ -5248,11 +5248,12 @@ class UTCTime(VisibleString):
         return self._value
 
     def totzdatetime(self):
-        if tzutc is None:
+        try:
+            return self._value.replace(tzinfo=tzUTC)
+        except TypeError as err:
             raise NotImplementedError(
                 "Package python-dateutil is required to use this feature",
-            )
-        return self._value.replace(tzinfo=tzutc())
+            ) from err
 
     def __repr__(self):
         return pp_console_row(next(self.pps()))