left out an 's' and a '== 0'

roomlist/accounts/cas_callbacks.py

@@ -92,7 +92,7 @@ def create_user(tree):
 
             # notify developers of user signup milestones
             num_users = User.objects.all().count()
-            if num_users % 50:
+            if num_users % 50 == 0:
                 message = "Congratulations! We've passed %d user registrations!" % num_users
                 slack_post(text=message,
                            channel='#roomlist',

roomlist/settings/slack.py

@@ -15,7 +15,7 @@ def slack_post(text, channel, username, icon_emoji):
         r = requests.post(webhook_url, data=json.dumps(payload))
         r.raise_for_status()
         print(r.status_code)
-    except request.exceptions.RequestException as e:
+    except requests.exceptions.RequestException as e:
         print("Error posting to Slack:", e)
 
 # Examples