Ned Deily added the comment: You are almost certainly seeing a crash due to a critical bug in the Apple-supplied version of Tk 8.5 on OS X systems up through at least OS X 10.11. See here for more information: https://www.python.org/download/mac/tcltk/#apple-8-5-9.
The solution is to use a Python that links with a more, up-to-date third-party version of Tcl and Tk, such as Pythons from python.org OS X installers and current versions of ActiveTcl from ActiveState: https://www.python.org/download/mac/tcltk/ ---------- resolution: duplicate -> third party superseder: Tkinter Unresponsive With Special Keys -> _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27192> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com