How to create module wide variables in Python
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Certainly! In Python, creating module-wide variables involves defining variables at the module level, making them accessible across different functions within the same module. Module-level variables are essentially global variables within the scope of a module. Let's go through a step-by-step tutorial with code examples:
Begin by creating a new Python module. A module is simply a Python file with the extension .py. For this tutorial, let's call the module mymodule.py.
Create another Python script to import the module and use its module-level variables and functions. Let's call this script main.py.
Execute the main.py script to see the results:
In mymodule.py, the variable module_variable is defined at the module level, making it accessible throughout the module.
The function print_module_variable prints the current value of module_variable.
The function modify_module_variable allows you to change the value of module_variable using the global keyword.
In main.py, the mymodule module is imported, and the module-level variable is accessed and printed.
The print_module_variable function is called to display the initial value of the module-level variable.
The modify_module_variable function is called to change the value of the module-level variable.
Finally, the print_module_variable function is called again to show the modified value.
This tutorial demonstrates the creation and usage of module-wide variables in Python. Module-level variables provide a convenient way to share data across functions within the same module.
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