What is scope in Python and JavaScript?

What is scope in Python and JavaScript?

Scope refers to the visibility of variables in programming. In Python, scope is determined by the location of variables, while in JavaScript, it can be influenced by function declarations and block statements.

Can you explain the difference between local and global scope?

Sure! Local scope means that a variable is accessible only within the function or block where it is defined. Global scope means that a variable is accessible from anywhere in the code.

How does scope affect variable hoisting in JavaScript?

In JavaScript, variable hoisting means that variable declarations are moved to the top of their containing scope. However, only the declarations are hoisted, not the initializations, which can lead to undefined values if accessed before the assignment.

Are there any scope-related issues I should be aware of?

Yes, common issues include variable shadowing, where a local variable has the same name as a global variable, and closure-related problems, where inner functions retain access to outer function variables.