From 14146f84fe34dae6513507a004e8b87ce420246b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=A1clav=20=C5=A0milauer?= <eu@doxos.eu>
Date: Fri, 11 Feb 2022 12:15:17 +0100
Subject: [PATCH] Fix empty dict as default arg

See e.g.
https://towardsdatascience.com/python-pitfall-mutable-default-arguments-9385e8265422
---
 cq_editor/widgets/object_tree.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cq_editor/widgets/object_tree.py b/cq_editor/widgets/object_tree.py
index c0ea1dcf..2030bd19 100644
--- a/cq_editor/widgets/object_tree.py
+++ b/cq_editor/widgets/object_tree.py
@@ -269,7 +269,9 @@ def addObjects(self,objects,clean=False,root=None):
             self.sigObjectsAdded[list].emit(ais_list)
 
     @pyqtSlot(object,str,object)
-    def addObject(self,obj,name='',options={}):
+    def addObject(self,obj,name='',options=None):
+
+        if options is None: options={}
 
         root = self.CQ