diff -r fcc406143e5b -r bcc07ff2362c svgui/pyjs/lib/pyjslib.py
--- a/svgui/pyjs/lib/pyjslib.py	Thu Aug 17 11:39:10 2017 +0300
+++ b/svgui/pyjs/lib/pyjslib.py	Thu Aug 17 14:27:06 2017 +0300
@@ -894,11 +894,11 @@
         return self.items().__iter__()
 
     def setdefault(self, key, default_value):
-        if not self.has_key(key):
+        if not key in self:
             self[key] = default_value
 
     def get(self, key, default_=None):
-        if not self.has_key(key):
+        if not key in self:
             return default_
         return self[key]