Tkinter module is the most used, beginner-friendly and well-documented module for making GUIs in python. Tkinter comes preinstalled with Python so you don't need to install or configure anything.
There are actually two ways of importing Tkinter in python
1. Import Everything from Tkinter
from tkinter import *
2. Import only modules which you are going to use actually
from tkinter import Tk, Frame
Example No 1 Import Everything ( * )
from tkinter import *root = Tk()root.mainloop()
which creates a simple window
Example No 2 Import what you need
from tkinter import Tkroot = Tk()
root.mainloop()
which imports only window class or module in this case