Tkinter rename, step 2: fix imports and add stub modules.
diff --git a/Lib/idlelib/keybindingDialog.py b/Lib/idlelib/keybindingDialog.py
index 1ce7ff4..e58ac73 100644
--- a/Lib/idlelib/keybindingDialog.py
+++ b/Lib/idlelib/keybindingDialog.py
@@ -1,8 +1,8 @@
 """
 Dialog for building Tkinter accelerator key bindings
 """
-from Tkinter import *
-import tkMessageBox
+from tkinter import *
+import tkinter.messagebox as tkMessageBox
 import string
 
 class GetKeysDialog(Toplevel):