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Brandon Rozek

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Software Developer, Researcher, and Linux Enthusiast.

Quick Python: Dataclasses

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Python 3.7 and above have a feature called dataclasses. This allows us to reduce boilerplate code by removing the need to create a whole constructor and providing a sensible __repr__ function.

from dataclasses import dataclass

@dataclass
class Person:
    name: str
    age: int = 0

Usage:

p = Person("Bob", 30)
print(p)
Person(name='Bob', age=20)

To make an attribute have a default value, add it after the type declaration like I have with age.

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