How Can I Access a Global Variable from a Main Module in Imported Utility Functions in Python?

Visibility of Global Variables in Imported Modules [Duplicate]

This programming question aims to address the issue of accessing global variables declared in one module from other imported modules. The specific scenario involves defining utility functions that utilize a global variable within the importing module.

Question:

How to make a global variable, defined in the main module, accessible to utility functions imported from external modules?

Answer:

Python's global variables are accessible within the scope of a module, not across modules. Therefore, to solve this issue, alternative approaches can be employed:

Instance Method Approach:

Create an instance method within a class defined in the utility module, which can access the global variable passed as an argument to the class constructor.

Module-Specific Global:

Define the global variable within the utility module and set its value in the main module prior to importing the utility functions.

Shared Global Variable:

Create a separate module containing the global variable and import it in both the main and utility modules.

Builtin Global:

In rare cases where the global variable is required to be accessible as a builtin, it can be added to the Python builtin module (Python 3.x).

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