I have run the install (and repair) which explicitly includes Tcl/Tk and l have this problem:
Microsoft Windows [Version 10.0.10586] (c) 2015 Microsoft Corporation. All rights reserved. > C:\Python\Python35\python.exe -m idlelib ** IDLE can't import Tkinter. Your Python may not be configured for Tk. ** Please suggest how this can be fixed any support greatly appreciated Nick McElwaine -- https://mail.python.org/mailman/listinfo/python-list