python: fix Message.get_header

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

diff --git a/bindings/python/notmuch/message.py b/bindings/python/notmuch/message.py
index d7f029f8789d43faeca117e4febec70ede109506..d1c1b58c4a9a0cc129830fdcec2eceee93821d60 100644 (file)
--- a/bindings/python/notmuch/message.py
+++ b/bindings/python/notmuch/message.py
@@ -229,7 +229,7 @@ class Message(Python3StringMixIn):
 
         #Returns NULL if any error occurs.
         header = Message._get_header(self._msg, _str(header))
-        if not header:
+        if header == None:
             raise NullPointerError()
         return header.decode('UTF-8', 'ignore')