🎁 New User? Get 20% off your first purchase with code NEWUSER20 · ⚡ Instant download · 🔒 Secure checkout Register Now →
Menu

Categories

Python Intermediate

What is Dataclass?

A decorator that automatically generates __init__, __repr__, __eq__, and other special methods for classes that mainly store data.

Python 3.7+ dataclasses reduce boilerplate for data-holding classes. The @dataclass decorator auto-generates methods based on type-annotated class attributes. Optional features include ordering, immutability (frozen=True), and default factories.

Dataclasses support inheritance, post-init processing (__post_init__), and field customization. For validation, consider Pydantic. For serialization, use dataclasses-json or cattrs. They replace manual __init__/__repr__ writing.

Related Terms

Python Typing Module
A standard library module providing type hints for function signatures and variables, enabling static analysis without runtime enforcement.
GIL (Global Interpreter Lock)
A mutex in CPython that allows only one thread to execute Python bytecode at a time, limiting true parallelism.
Python Descriptors
Objects that define __get__, __set__, or __delete__ methods, controlling how attribute access works on other objects.
Asyncio
A Python library for writing concurrent code using async/await syntax for non-blocking I/O operations.
ABC (Abstract Base Class)
A class that defines a common interface for subclasses by declaring abstract methods that must be implemented.
Python Package
A directory containing Python modules and an __init__.py file, providing a way to organize and distribute reusable code.
 View All Python Terms →