What is the LEGB rule in Python?
An example of an AI chatbot conversation about the LEGB rule in Python programming.
What is the LEGB rule in Python?
The LEGB rule in Python refers to the order in which Python looks for variable names: Local, Enclosing, Global, and Built-in.
Can you explain each of those levels?
Sure! Local refers to variables defined within a function. Enclosing refers to variables in the local scope of enclosing functions. Global refers to variables defined at the top level of a module, and Built-in refers to names preassigned in the built-in scope.
How does this affect variable shadowing?
Variable shadowing occurs when a local variable has the same name as a global variable. The local variable will be used in that scope, which can lead to confusion.
Can you give an example of LEGB in action?
Certainly! If you have a global variable x, and a function defines a local variable x, the function will use the local x instead of the global one.
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