Python In Practice - 15 Projects to Master Python - Accessing Inherited Objects

The video tutorial explains the concept of class variables in object-oriented programming, focusing on the differences between public, protected, and private variables. It highlights how inheritance affects variable access and emphasizes best practices for accessing variables within classes. The tutorial concludes by summarizing the key points discussed.

What is a key limitation when a child class inherits from a parent class?

• The child class cannot access any methods from the parent class.

• The child class cannot be instantiated.

• The child class cannot create its own variables.

• The child class cannot access private variables from the parent class.

Which type of variable can be accessed globally?

• Private variable

• Protected variable

• Public variable

• Local variable

What does a variable with a single underscore prefix indicate?

• It is a public variable.

• It is a private variable.

• It is a static variable.

• It is a protected variable.

Why is it considered bad practice to access variables with double underscores outside their class?

• It is not supported by most programming languages.

• It can cause runtime errors.

• It violates encapsulation principles.

• It makes the code run slower.

What is the recommended practice for accessing variables with double underscores?

• Access them using a special keyword.

• Access them only within the class they are defined.

• Access them only in inherited classes.

• Access them freely in any class.