What are immutable defaults in Python?

What are immutable defaults in Python?

Immutable defaults in Python refer to default argument values that cannot be changed after they are set, like tuples or strings.

Can you give me an example of using an immutable default in a function?

Sure! Here's an example: def my_function(arg1, arg2=()) where arg2 is a tuple, which is immutable.

What happens if I use a mutable default like a list?

Using a mutable default like a list can lead to unexpected behavior, as the list can be modified across function calls.

How can I avoid issues with mutable defaults?

To avoid issues, use None as a default and initialize the mutable object inside the function if needed.