Invalid type alias for `EvaluationContextAttributes`

[AlexandrePicosson]

Hi, I'm trying out OpenFeature and reading the documentation I thought that the following would be a valid evaluation context attribute:

from openfeature.evaluation_context import EvaluationContext

evaluation_context = EvaluationContext(
    targeting_key="my_user_id", attributes={"user_attributes": {"age_category": "30-40"}}
)

However Mypy reports the following error with this code:

$ uv run mypy openfeature.py --install-types --non-interactive --show-traceback
openfeature.py:4: error: Dict entry 0 has incompatible type "str": "str"; expected "str": "Mapping[str, bool | int | float | str | datetime | Sequence[EvaluationContextAttributes] | Mapping[str, EvaluationContextAttributes]]"  [dict-item]

I'm wondering whether this is intentional or it was a mistake when adding stricter type hints in #504.
The following line makes me think this is an error as EvaluationContextAttributes is already a mapping the type accept recursive mappings of mappings that can be matched only with an empty dict and it should be replaced with "EvaluationContextAttributes" to accept structures like dict[str, dict[str: bool | int | float | str | datetime | Sequence[...] | dict[...]].

python-sdk/openfeature/evaluation_context/__init__.py

Line 22 in 32fdec1

typing.Mapping[str, "EvaluationContextAttributes"],

If this is really an issue and not an error on my side I would be happy to contribute the fix.

---

Versions:

• Python: 3.12.7
• openfeature-sdk: 0.8.2

[gruebel]

hey @AlexandrePicosson

thanks for the detailed bug report 🍻 you are right the last entry in EvaluationContextAttributes should not be typing.Mapping[...], just EvaluationContextAttributes.

If you have time feel free to create a PR and tag me for the review.