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Python follows the LEGB rule (Local, Enclosing, Global, Built-in).
When you reference a variable, Python checks in this order:
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Local – variables inside the current function
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Enclosing – variables in outer functions (nested functions)
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Global – variables at the top level of the script
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Built-in – Python’s built-in names
This resolution process is essential for beginners who want to Learn Python Online, as understanding LEGB helps you write cleaner, bug-free code. The first match determines the scope.
Topic starter
Posted : 03/12/2025 6:13 am