Tkinter comes pre-installed with the Python installer binaries for Mac OS X and the Windows platform. So if you install Python from the official binaries for Mac OS X or Windows platform, you are good to go with Tkinter.
For Debian versions of Linux you have to install it manually by using the following commands.
For Python 3
sudo apt-get install python3-tk
For Python 2.7
sudo apt-get install python-tk
Linux distros with yum installer can install tkinter module using the command:
yum install tkinter
To verify if you have successfully installed Tkinter, open your Python console and type the following command:
import tkinter as tk # for Python 3 version
import Tkinter as tk # for Python 2.x version
You have successfully installed Tkinter, if the above command executes without an error.
To check the Tkinter version, type the following commands in your Python REPL:
For python 3.X
import tkinter as tk tk._test()
For python 2.X
import Tkinter as tk tk._test()
Tkinter as tk is not required but is good practice as it helps keep things consistent between version.