dataclasses

Stdlib — DataPython 3.7+Intermediate

Decorator for auto-generating class boilerplate (__init__, __repr__, etc.)

Quick Info

Documentation
Official Docs
Python Version
3.7+
Dependencies
None — Python Standard Library
Install
Included with Python

Learn by Difficulty

Easy2 examples
Examples|Playground
Intermediate2 examples
Examples|Playground
Advanced1 example
Examples|Playground
Expert1 example
Examples|Playground

Quick Example

python
from dataclasses import dataclass, field

@dataclass
class Point:
    x: float
    y: float

@dataclass
class Person:
    name: str
    age: int
    hobbies: list = field(default_factory=list)

p = Point(3.0, 4.0)
print(p)

person = Person("Alice", 30, ["reading", "coding"])
print(person)

The dataclasses module is part of Python's standard library. Decorator for auto-generating class boilerplate (__init__, __repr__, etc.).

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Tags

stdliboopdata-structuredatatypedecorator

Related Items

class
Keyword
Defines a new class (blueprint for creating objects)
attrs
Package — Validation
Classes without boilerplate: attributes with validation
pydantic
Package — Validation
Data validation using Python type annotations; settings management
typing
Stdlib — Typing
Type hint support: List, Dict, Optional, Union, Any, Callable, Generic, Protocol
__init__
Dunder Method
Constructor; called when a new instance is created to initialize its attributes
__repr__
Dunder Method
Returns an unambiguous developer-facing string representation