python: fix NULL pointer tests

[notmuch] / bindings / python / notmuch / thread.py

diff --git a/bindings/python/notmuch/thread.py b/bindings/python/notmuch/thread.py
index 0dac522c5aa30a8477afd65a1fe9a9a006a5306e..2f60d493fc52b0945e7479d9655d8b5c89edd7f6 100644 (file)
--- a/bindings/python/notmuch/thread.py
+++ b/bindings/python/notmuch/thread.py
@@ -14,18 +14,20 @@ for more details.
 You should have received a copy of the GNU General Public License
 along with notmuch.  If not, see <http://www.gnu.org/licenses/>.
 
-Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
+Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>
 """
 
 from ctypes import c_char_p, c_long, c_int
 from notmuch.globals import (
     nmlib,
-    NullPointerError,
-    NotInitializedError,
     NotmuchThreadP,
     NotmuchMessagesP,
     NotmuchTagsP,
 )
+from .errors import (
+    NullPointerError,
+    NotInitializedError,
+)
 from .messages import Messages
 from notmuch.tag import Tags
 from datetime import date
@@ -258,5 +260,5 @@ class Thread(object):
 
     def __del__(self):
         """Close and free the notmuch Thread"""
-        if self._thread is not None:
+        if self._thread:
             self._destroy(self._thread)