--- a/tuikit/editfield.py	Sun Jul 31 13:04:39 2011 +0200
+++ b/tuikit/editfield.py	Wed Aug 17 21:11:47 2011 +0200
@@ -10,7 +10,7 @@
         Widget.__init__(self, width, 1)
 
         self.code = locale.getpreferredencoding()
-        if not type(value) is str:
+        if not isinstance(value, str):
             value = str(value, self.code)
 
         self.value = value