[vitamark]

There are examples like ORM query builders (something like `User.id == user_id` should not return a boolean, but rather some inspectable query part), multi-value comparisons (e.g. numpy arrays and views which could also be used as masks for indexing)

In general, when you get your hands on operator overloading you get a bunch of various quirky applications for each. Some dunder methods have strict runtime-level rules (e.g. __hash__ or __len__), some don't

[brandnewideas]

That's one of the things I truly didn't get from my (very limited) experience with SQLAlchemy. Why not just have a method like orm.eq(User.id, user_id)? Much more readable.