Change ArrayV3Metadata.data_type to DataType #2278
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d-v-b
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Oct 1, 2024
src/zarr/core/metadata/v3.py
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| } | ||
| return data_type_to_numpy[self] | ||
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| def to_numpy_dtype(self) -> np.dtype[Any]: |
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I could see to_numpy as a slightly briefer name for this method
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I kind of prefer it more explicit, but I suppose that information is in the type annotation, so ok.
d-v-b
reviewed
Oct 1, 2024
src/zarr/core/metadata/v3.py
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| @classmethod | ||
| def from_dtype(cls, dtype: np.dtype[Any]) -> DataType: | ||
| def from_numpy_dtype(cls, dtype: np.dtype[Any]) -> DataType: |
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d-v-b
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Oct 1, 2024
d-v-b
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Oct 4, 2024
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In working on #2036, I realized that the current treatment of the
data_typeattribute in V3 metadata was somewhat inconsistent. This class is meant to represent the Zarr metadata in an abstract way, in alignment with the spec. However, it was just using numpy dtypes internally.This becomes a problem when we want to support dtypes that are not numpy dtypes, like
string.This PR changes the
ArrayV3Metadataclass such that the type ofdata_typeis the existingDataTypeenum. However, I've kept the.dtypeproperty returning a numpy dtype. This allows this change to be minimally disruptive to other parts of the code.