Attrs – The One Python Library Everyone Needs

• pydantic

  174 20,659 9.8 Python

  Data validation using Python type hints

  

  Pydantic is dataclasses, except types are validated at runtime? It's nice and looks just like a normal dataclass looking at https://pydantic-docs.helpmanual.io/

  For any larger program, pervasive type annotations and "compile" time checking with mypy is a really good idea though, which somewhat lessens the need for runtime checking.

• SaaSHub

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  SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

  

• dataclasses

  3 584 0.0 Python

  dataclasses was explicitly inspired by attrs. https://github.com/ericvsmith/dataclasses/issues/1

• CPython

  1,377 62,610 10.0 Python

  The Python programming language

  

  This is only remotely relevant but I recently learned that the related `dataclasses` id implemented by constructing _string representations_ of functions and calling `exec` on them.

  https://github.com/python/cpython/blob/3.10/Lib/dataclasses....

  Kind of blew my mind

• traits

  3 432 7.2 Python

  Observable typed attributes for Python classes (by enthought)

  

  My favourite among this class of Python libraries has been traits from Enthought:

  https://github.com/enthought/traits

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