diff --git a/wx/py/shell.py b/wx/py/shell.py
index b8eed3a8..a5fa6a71 100644
--- a/wx/py/shell.py
+++ b/wx/py/shell.py
@@ -750,10 +750,12 @@ class Shell(editwindow.EditWindow):
 
         #unique (no duplicate words
         #oneliner from german python forum => unique list
-        unlist = [thlist[i] for i in xrange(len(thlist)) if thlist[i] not in thlist[:i]]
+        unlist = [thlist[i] for i in range(len(thlist)) if thlist[i] not in thlist[:i]]
 
         #sort lowercase
-        unlist.sort(lambda a, b: cmp(a.lower(), b.lower()))
+        def _cmp(a,b):
+            return  ((a > b) - (a < b))
+        unlist.sort(lambda a, b: _cmp(a.lower(), b.lower()))
 
         #this is more convenient, isn't it?
         self.AutoCompSetIgnoreCase(True)