Momence — independent third-party profile of a public API surface, by API Evangelist. Momence is an all-in-one management platform for fitness, wellness, and experience-based businesses - studios, ...

本内容遵循CC 4.0 BY-SA版权协议 写这篇文章前，我先说点实在的。很多人学Python时，看到 __init__ 、 __str__ 这类带双下划线的方法，总觉得神秘兮兮，甚至觉得"这是高手才需要懂的深奥东西"。

一、PyO3 中的魔术方法：总体规则与签名约定 Python 的对象模型通过多种协议（如序列协议、映射协议、数值协议）定义对象行为，而类通过实现"魔术方法"（如 __str__ 、 __repr__ ）来支持这些协议。由于方法名两侧各有两个下划线，这类方法也被称为 dunder 方法。

Artisanal and small-scale gold mining, dominated by placer methods, accounts for approximately 20% of annual global gold production from an estimated 15 to 20 million miners, making it one of the ...