Building a Analog Meter Gauge GUI using Tkinter and ttkbootstrap library

In this tutorial, we will learn how to build a Cross platform analog meter GUI, resembling the classic gauges that display pressure, temperature, speed, and more, with Python and the ttkbootstrap theme in tkinter.

This type of Meter or Gauge GUI elements are excellent for displaying continuously varying quantities like temperature, pressure on your PC or Linux Single Board Computers like Raspberry PI as apart of Data Acquisition, logging or Control Software.

First thing to do before running the code presented here, is to make sure that ttkbootstrap library is installed on your System. You can use the PIP command for that.

use pip list to check what software are installed on your system .If ttkbootstrap not installed, use the following command to install it 

pip install ttkbootstrap

Error Issue

 img.resize((self._metersize, self._metersize), Image.CUBIC)
AttributeError: module 'PIL.Image' has no attribute 'CUBIC'