#Returns NULL if any error occurs.
header = Message._get_header(self._msg, _str(header))
- if header == None:
+ if not header:
raise NullPointerError()
return header.decode('UTF-8', 'ignore')
raise NotInitializedError()
tags_p = Message._get_tags(self._msg)
- if tags_p == None:
+ if not tags_p:
raise NullPointerError()
return Tags(tags_p, self)