How to make a GUI app with python (Tkinter)

In this video i will be showing you how to make an app in python that has a Graphical User Interface using a python library called Tkinter
This is how to install Tkinter in linux
$ sudo apt-get install python3-tk (for python3)
$ sudo apt-get install python-tk (for python2)

Here is the link for the code if you didnt follow up