Mastering Object-oriented Python

Storing the configuration in PY files

The PY file format means using Python code as the configuration file as well as the language to implement the application. We will have a configuration file that's simply a module; the configuration is written in the Python syntax. This removes the need to parse the module.

Using Python gives us a number of design considerations. We have two overall strategies to use Python as the configuration file:

• A top-level script: In this case, the configuration file is simply the top-most main program
• An exec() import: In this case, our configuration file provides parameter values that are collected into module global variables

We can design a top-level script file that looks like the following code:

from simulator import ...