Add Python Documentation entry to Help menu.
diff --git a/Tools/idle/Bindings.py b/Tools/idle/Bindings.py
index a2c7aa3..ede07b8 100644
--- a/Tools/idle/Bindings.py
+++ b/Tools/idle/Bindings.py
@@ -43,6 +43,7 @@
   ]),
  ('help', [
    ('_Help...', '<<help>>'),
+   ('Python _Documentation...', '<<python-docs>>'),
    None,
    ('_About IDLE...', '<<about-idle>>'),
   ]),
@@ -52,3 +53,5 @@
     default_keydefs = windows_keydefs
 else:
     default_keydefs = unix_keydefs
+
+del sys