Now, let's explore a window-based interface with more examples of how to drive LEDs.
The code is divided into sections and includes a summary of the functionality for the major blocks but not all of the code. Review the code and the summaries following the image before you download the code from http://1drv.ms/1ysAxkl
In order for you to have a mental model of the LED demo as you read through the code, here is the TKinter interface (GPIO test) when rendered:
This block loads the required libraries, does initial setup, and defines the TKinter window. It is possible to set the window size here but, in this code, ...