From d7c6eebeec41a19819b02c77c6488f5dc1f9002f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Sun, 6 Mar 2022 18:01:59 +0100
Subject: [PATCH] Manage None as value of PYSON In

issue11280
review393771002
(grafted from bf883a4cc971cbb9c4654e3685aa54af56ab2548)

--HG--
branch : 6.0
---
 proteus/pyson.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/proteus/pyson.py b/proteus/pyson.py
index 0740e0a892..0f2ed608c6 100644
--- a/proteus/pyson.py
+++ b/proteus/pyson.py
@@ -509,7 +509,10 @@ class In(PYSON):
 
     @staticmethod
     def eval(dct, context):
-        return dct['k'] in dct['v']
+        if dct['v']:
+            return dct['k'] in dct['v']
+        else:
+            return False
 
 
 class Date(PYSON):