# HG changeset patch
# User Mads Kiilerich <mads@kiilerich.com>
# Date 2023-03-05 10:57:51
# Node ID cef93c7ebaa67b219736c4ccd65849db87685e07
# Parent  0e7dab99898425c6eb34ac315abd6529ddf7ef49

ruff: Test for membership should be `not in`

diff --git a/kallithea/lib/webutils.py b/kallithea/lib/webutils.py
--- a/kallithea/lib/webutils.py
+++ b/kallithea/lib/webutils.py
@@ -179,7 +179,7 @@ session_csrf_secret_name = "_session_csr
 
 def session_csrf_secret_token():
     """Return (and create) the current session's CSRF protection token."""
-    if not session_csrf_secret_name in session:
+    if session_csrf_secret_name not in session:
         session[session_csrf_secret_name] = str(random.getrandbits(128))
         session.save()
     return session[session_csrf_secret_name]