Dataclass Field Order

What it does

Checks for dataclass definitions where required fields are defined after fields with default values.

Why is this bad?

In dataclasses, all required fields (fields without default values) must be defined before fields with default values. This is a Python requirement that will raise a TypeError at runtime if violated.

Example

from dataclasses import dataclass


@dataclass
class Example:
    x: int = 1  # Field with default value
    # Required field after field with default
    y: str  # error