When should I use private variables in programming?

Can you explain when I should use private variables in my code?

Private variables are used to encapsulate data and restrict access to it from outside the class, promoting data integrity.

What are the benefits of using private variables?

They help in maintaining a clean interface, prevent unintended interference, and make the code easier to maintain.

Are there any downsides to using private variables?

Yes, overusing them can lead to more complex code and may hinder flexibility if you need to access those variables externally.

Can you give me an example of private variables in a class?

Sure! In Python, you can define a private variable by prefixing it with an underscore, like this: self._private_var.