python: improve Query.count_messages docstring

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

diff --git a/bindings/python/notmuch/tag.py b/bindings/python/notmuch/tag.py
index ceb724410606a729bd042a394b2937816afc30ed..d2dc498ca589b9622ba31c7c7c7dd372653660bb 100644 (file)
--- a/bindings/python/notmuch/tag.py
+++ b/bindings/python/notmuch/tag.py
@@ -17,7 +17,7 @@ along with notmuch.  If not, see <http://www.gnu.org/licenses/>.
 Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>'
 """
 from ctypes import c_char_p
-from notmuch.globals import nmlib, STATUS, NotmuchError, NotmuchTagsP, _str, Python3StringMixIn
+from notmuch.globals import nmlib, STATUS, NotmuchError, NotmuchTagsP, Python3StringMixIn
 
 
 class Tags(Python3StringMixIn):
@@ -70,7 +70,7 @@ class Tags(Python3StringMixIn):
         :TODO: Make the iterator optionally work more than once by
                cache the tags in the Python object(?)
         """
-        if tags_p is None:
+        if not tags_p:
             raise NotmuchError(STATUS.NULL_POINTER)
 
         self._tags = tags_p