Tkinter rename, step 2: fix imports and add stub modules.
diff --git a/Lib/idlelib/dynOptionMenuWidget.py b/Lib/idlelib/dynOptionMenuWidget.py
index e81f7ba..90fc323 100644
--- a/Lib/idlelib/dynOptionMenuWidget.py
+++ b/Lib/idlelib/dynOptionMenuWidget.py
@@ -2,8 +2,8 @@
 OptionMenu widget modified to allow dynamic menu reconfiguration
 and setting of highlightthickness
 """
-from Tkinter import OptionMenu
-from Tkinter import _setit
+from tkinter import OptionMenu
+from tkinter import _setit
 import copy
 
 class DynOptionMenu(OptionMenu):