python: fix NULL pointer tests

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

diff --git a/bindings/python/notmuch/tag.py b/bindings/python/notmuch/tag.py
index 526e51cd3c2697af207d5ff1c7b5ec293cd5b85d..e0598139a0d44f7499f4ebaf1d3f6fda3f0d41e2 100644 (file)
--- a/bindings/python/notmuch/tag.py
+++ b/bindings/python/notmuch/tag.py
@@ -14,15 +14,17 @@ 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
 from notmuch.globals import (
     nmlib,
     Python3StringMixIn,
+    NotmuchTagsP,
+)
+from .errors import (
     NullPointerError,
     NotInitializedError,
-    NotmuchTagsP,
 )
 
 
@@ -135,5 +137,5 @@ class Tags(Python3StringMixIn):
 
     def __del__(self):
         """Close and free the notmuch tags"""
-        if self._tags is not None:
+        if self._tags:
             self._destroy(self._tags)