Python for Everybody: The Ultimate Python 3 Bootcamp - Scope

The video tutorial explains the concept of scope in programming, particularly in Python. It introduces the LEGB rule, which stands for Local, Enclosed, Global, and Built-in scopes, and demonstrates how variables are accessed within different scopes using examples. The tutorial also covers nested functions and emphasizes best practices for managing scope to avoid confusion, such as explicitly passing data into functions.

What is the main reason a variable defined inside a function cannot be accessed outside of it?

• The variable is not initialized properly.

• The variable is in a different scope.

• The variable is not declared as global.

• The variable is not assigned a value.

According to the LEGB rule, which scope does Python check first when looking for a variable?

• Local

• Built-in

• Global

• Enclosed

How does Python handle variable names that are the same in different scopes?

• It uses the variable from the global scope.

• It raises a syntax error.

• It uses the variable from the built-in scope.

• It uses the variable from the local scope.

In a nested function scenario, if a variable is not found in the local scope, where does Python look next?

• It raises an error

• Built-in scope

• Enclosed scope

• Global scope

What is a potential issue with relying on global variables within functions?

• It makes the code run slower.

• It can lead to confusion and errors.

• It is not supported in Python.

• It requires more memory.

Why is it recommended to pass variables explicitly into functions in Python?

• To improve code readability and maintainability.

• To increase the execution speed of the code.

• To reduce the number of lines of code.

• To make the code compatible with other programming languages.

What is a key difference between how Python and JavaScript handle variable scope?

• JavaScript uses block scope, Python does not.

• Python allows variable hoisting, JavaScript does not.

• Python uses function scope, JavaScript uses block scope.

• JavaScript uses function scope, Python uses block scope.