Replace all map(None, a) with list(a).
diff --git a/Demo/tkinter/guido/rmt.py b/Demo/tkinter/guido/rmt.py
index 440650c..bfea195 100755
--- a/Demo/tkinter/guido/rmt.py
+++ b/Demo/tkinter/guido/rmt.py
@@ -134,7 +134,7 @@
     file_m_apps.add('command')
     file_m_apps.delete(0, 'last')
     names = root.winfo_interps()
-    names = map(None, names) # convert tuple to list
+    names = list(names)
     names.sort()
     for name in names:
         try: