Global variables across Python modules

The best way to share global variables across different modules within the same program is to create a special module (often named config or cfg). Import the config module in all modules of your application; the module then becomes available as a global name. There is only one instance of each module, and so any changes made to the module object get reflected everywhere. For Example, sharing global variables across modules.

Code 1: Create a config.py file to store global variables

Code 2: Create a modify.py file to modify global variables

Here we have modified the value of x, y, and z. These variables were defined in the module config.py, hence we have to import config module, and can use config.variable_name to access these variables.

Create a main.py file to modify global variables

Output:

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In this article, we will cover the global keyword, the basic rules for global keywords in Python, the difference between the local, and global variables, and examples of global keywords in Python.