Creating variables that never change seems very limiting. Most programs do not just run on their own. Usually they will request input from the user, either in the form of keyboard input (shown here), ...

This is the first of a series of Python scripts to interact with Felica or NFC cards. The current script reads the IDm from a Felica card and inputs it as keyboard input at a rate of once per second.

Input can come from many automated sources, but the most common is keyboard input from the user. ... For example, in the Python 3 code below, ...