[tddispointless]

I used attrs in a large python project, and it was more pain than it was worth. Off the top of my head, knowing the difference between factory vs default in the initializer was a bug that bit us, inheritance was painful because we were forced to redefine the attrs from the parent class in each child class (maybe they fixed this now). Validators were broken somehow. I even made a GitHub issue for this which was never addressed. Attrs are good for simple stuff. I feel plain old classes are more reliable once things get complex. And for simple things, dataclasses do just fine too.