What are some advanced features of Python dataclasses?

What are some advanced features of Python dataclasses?

Python dataclasses offer features like default values, factory functions, immutability, and post-init processing.

Can you explain how to use default factory functions?

Sure! You can use field(default_factory=list) to set a default value that is mutable, like a list.

What does immutability mean in the context of dataclasses?

Immutability means that once an instance is created, its fields cannot be modified. You can achieve this by using frozen=True.

How do I implement post-init processing?

You can define a __post_init__ method in your dataclass to perform additional initialization after the built-in __init__.