change formatting

.gitlab-ci.yml

-image: django:python2
+image: django:latest
 
 before_script:
   - apt-get update -qq && apt-get install -y -qq sqlite3 libsqlite3-dev

accounts/views.py

@@ -11,10 +11,10 @@ def send_login_email(request):
     email = request.POST['email']
     uid = str(uuid.uuid4())
     Token.objects.create(email=email, uid=uid)
-    url = request.build_absolute_uri(f'/accounts/login?uid={uid}')
+    url = request.build_absolute_uri('/accounts/login?uid=%s' % uid)
     send_mail(
         'Your login link for Superlists',
-        f'Use this link to log in:\n\n{url}',
+        'Use this link to log in:\n\n%s' % url,
         'noreply@superlists',
         [email],
     )
@@ -22,7 +22,6 @@ def send_login_email(request):
 
 
 def login(request):
-    print('login view', file=sys.stderr)
     uid = request.GET.get('uid')
     user = authenticate(uid=uid)
     if user is not None: