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Fix type of v2 compressors #3232

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Merged
merged 3 commits into from
Jul 11, 2025
Merged

Fix type of v2 compressors #3232

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b330dbd
Fix type of v2 compressors
dstansby Jul 11, 2025
73dbeb8
Add bugfix entry
dstansby Jul 11, 2025
df9a2aa
Merge branch 'main' into v2-metadata-comp-type
d-v-b Jul 11, 2025
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3 changes: 3 additions & 0 deletions changes/3232.bugfix.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Fix the type of ``ArrayV2Metadata.codec`` to constrain it to ``numcodecs.abc.Codec | None``.
Previously the type was more permissive, allowing objects that can be parsed into Codecs (e.g., the codec name).
The constructor of ``ArrayV2Metadata`` still allows the permissive input when creating new objects.
2 changes: 1 addition & 1 deletion src/zarr/core/metadata/v2.py
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Expand Up @@ -68,7 +68,7 @@ class ArrayV2Metadata(Metadata):
order: MemoryOrder = "C"
filters: tuple[numcodecs.abc.Codec, ...] | None = None
dimension_separator: Literal[".", "/"] = "."
compressor: CompressorLikev2
compressor: numcodecs.abc.Codec | None
attributes: dict[str, JSON] = field(default_factory=dict)
zarr_format: Literal[2] = field(init=False, default=2)

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