How can I use advanced features of data classes in Python?

How can I use advanced features of data classes in Python?

You can use features like default factories, post-init processing, and frozen instances. What specific feature are you interested in?

Can you explain how to use default factories?

Sure! Default factories allow you to set default values for fields using a callable. For example, you can use field(default_factory=list) to initialize a list.

What about post-init processing?

Post-init processing lets you run additional initialization logic after the built-in __init__ method. You can define a __post_init__ method in your data class.

Can you give me an example of a frozen data class?

Absolutely! A frozen data class is immutable. You can define it like this: @dataclass(frozen=True). This prevents any modification of its fields after creation.