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A comment on Fastcore: A library that extends Python with new features. Parent comment

Re:Fastcore: A library that extends Python with new features by nemetroid on Saturday September 05, 2020 @03:50PM (#24386399)
> dataclasses is not very extensible or flexible. It's fine for starting with, but it's not at all a replacement for store_attr etc.

> At fast.ai we used dataclasses extensively for a couple of years, but it just kept biting us.

What were the issues you had?

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Re:Fastcore: A library that extends Python with new features by Recursing on Saturday September 05, 2020 @04:52PM (#24386760)
https://www.attrs.org/en/stable/why.html#data-classes

The most used python library for these things is attrs, I think it mostly provides support for slotted classes (more memory efficient), "converters" (normalization), validation and serialization

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Re:Fastcore: A library that extends Python with new features by jph00 on Saturday September 05, 2020 @05:26PM (#24386959)
The key issue is that it requires inheritance, but doesn't actually support subclassing very well.

Also it relies on python's type system, which is rather limited.

It's a very large module for what it does, and understanding all the details of how it works in practice is a big challenge.

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