Managing user preferences
A very common theme in several GUI programs involves letting the user set the program's preferences.
For example, what if we want users to be able to customize the chessboard colors? What if we want users to select colors and once selected, it is saved as a user preference and it is loaded the next time the program is run? Let's implement this as a feature.
Python offers a standard module called configparser that lets us save user preferences. Let's see the configparser module in action.
To begin with, import the ConfigParser class from the configparser module in the configurations.py file, as follows (see code 4.07):
from configparser import ConfigParser
The configparser module uses the .ini files to store and read the configuration ...
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