cant compare against None with ==

model.py

@@ -146,7 +146,7 @@ class TwitterArchive(db.Model, TimestampMixin):
     chunks_failed = db.Column(db.Integer, server_default='0', nullable=False)
 
     def status(self):
-        if self.chunks == None or self.chunks_failed > 0:
+        if self.chunks is None or self.chunks_failed > 0:
             return 'failed'
         if self.chunks_successful == self.chunks:
             return 'successful'

templates/logged_in.html

@@ -82,7 +82,7 @@
     <ul>
     {% for archive in g.viewer.account.twitter_archives %}
         <li class="tweet_archive" data-status="{{archive.status()}}">{{archive.created_at.strftime('%Y-%m-%d %H:%M')}}<br>
-            {% if archive.chunks == None %}
+            {% if archive.chunks is None %}
             {{archive.chunks_successful}}/{{archive.chunks}} months imported, {{archive.chunks_failed}} failed</li>
             {% else %}
             Archive could not be opened