How do I pass parameters by reference in Python?

How do I pass parameters by reference in Python?

In Python, all parameters are passed by reference, but it's important to understand how mutable and immutable types work.

Can you give me an example of passing a list by reference?

Sure! If you modify a list inside a function, the changes will reflect outside the function as well.

What happens if I pass an integer instead?

Integers are immutable, so if you try to modify it, you'll create a new integer instead of changing the original.

How can I ensure a parameter is not modified?

You can pass a copy of the object instead of the original. For lists, you can use list.copy() or slicing.