What is pass by value in Python?

Can you explain what pass by value means in Python?

In Python, all arguments are passed by object reference, which is often referred to as 'pass by value' in a broader sense.

So, does that mean the original object can be modified?

Not exactly. If you modify a mutable object, the changes will reflect outside the function. But if you reassign the variable, it won't affect the original object.

Can you give me an example to illustrate this?

Sure! If you pass a list to a function and modify it, the changes will be seen outside the function. But if you assign a new list to that variable, the original list remains unchanged.

Thanks! That makes it clearer. What about immutable objects?

With immutable objects like integers or strings, any modification creates a new object, leaving the original unchanged.