Tkinter, step 2: adapt imports.
diff --git a/Lib/idlelib/MultiStatusBar.py b/Lib/idlelib/MultiStatusBar.py
index 8ee2d03..4fc8dcf 100644
--- a/Lib/idlelib/MultiStatusBar.py
+++ b/Lib/idlelib/MultiStatusBar.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 class MultiStatusBar(Frame):