--- original/file_to_fix.py
+++ fixed/file_to_fix.py
@@ -50,7 +50,7 @@
             if raw_msg != '':
                 mqtt_client.publish(MQTT_TOPIC, pub_msg)
                 f = open('messages.txt', 'a')
-                f.write('%s\\t' %datetime.now().strftime('%Y-%m-%d %H:%M'))
+                f.write('%s\\t' % datetime.now().strftime('%Y-%m-%d %H:%M'))
                 f.write('%s\\t' % current_user)
                 f.write('%s\\n' % raw_msg)
                 f.close()