best-practices

Class Design for Compilation

Design classes and methods that compile efficiently.

Published May 30, 2026

Simple Classes Compile Best

@dataclass
class Point:
    x: float
    y: float

Avoid Complex Metaclasses

Custom metaclasses other than ABCMeta may fall back to CPython.

Prefer Slots for Memory

class Item:
    __slots__ = ['name', 'price']

Method Call Overhead

Method calls are slightly slower than free functions. For hot inner loops, consider extracting to a free function.