Python Graphic User Interface FAQ (https://docs.python.org/3/faq/gui.html)
GUI Programming in Python Wiki (https://wiki.python.org/moin/GuiProgramming)
Python – GUI Programming (Tkinter) (http://www.tutorialspoint.com/python/python_gui_programming.htm)
7 Top Python GUI Frameworks for 2017 (https://insights.dice.com/2017/08/07/7-top-python-gui-frameworks-for-2017-2/)