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cattrs v22.1.0 Release Notes

Release Date: 2022-04-03 // 3 months ago
    • cattrs now uses the CalVer versioning convention.
    • ✅ cattrs now has a detailed validation mode, which is enabled by default. Learn more here <https://cattrs.readthedocs.io/en/latest/validation.html>_. The old behavior can be restored by creating the converter with detailed_validation=False.
    • attrs and dataclass structuring is now ~25% faster.
    • 🛠 Fix an issue structuring bare typing.List s on Pythons lower than 3.9. (#209 <https://github.com/python-attrs/cattrs/issues/209>_)
    • 🛠 Fix structuring of non-parametrized containers like list/dict/... on Pythons lower than 3.9. (#218 <https://github.com/python-attrs/cattrs/issues/218>_)
    • 🛠 Fix structuring bare typing.Tuple on Pythons lower than 3.9. (#218 <https://github.com/python-attrs/cattrs/issues/218>_)
    • Fix a wrong AttributeError of an missing __parameters__ attribute. This could happen when inheriting certain generic classes – for example typing.* classes are affected. (#217 <https://github.com/python-attrs/cattrs/issues/217>_)
    • 🛠 Fix structuring of enum.Enum instances in typing.Literal types. (#231 <https://github.com/python-attrs/cattrs/pull/231>_)
    • 🛠 Fix unstructuring all tuples - unannotated, variable-length, homogenous and heterogenous - to list. (#226 <https://github.com/python-attrs/cattrs/issues/226>_)
    • For forbid_extra_keys raise custom ForbiddenExtraKeyError instead of generic Exception. (#225 <https://github.com/python-attrs/cattrs/pull/225>_)
    • 👀 All preconf converters now support loads and dumps directly. See an example here <https://cattrs.readthedocs.io/en/latest/preconf.html>_.
    • 🛠 Fix mappings with byte keys for the orjson, bson and tomlkit converters. (#241 <https://github.com/python-attrs/cattrs/issues/241>_)

Previous changes from v1.10.0

    • ➕ Add PEP 563 (string annotations) support for dataclasses. (#195 <https://github.com/python-attrs/cattrs/issues/195>_)
    • 🛠 Fix handling of dictionaries with string Enum keys for bson, orjson, and tomlkit.
    • Rename the cattr.gen.make_dict_unstructure_fn.omit_if_default parameter to _cattrs_omit_if_default, for consistency. The omit_if_default parameters to GenConverter and override are unchanged.
    • 📦 Following the changes in attrs 21.3.0, add a cattrs package mirroring the existing cattr package. Both package names may be used as desired, and the cattr package isn't going away.