This example demonstrates how to extend Zarr Python by defining a new data type.

The example shows how to:

• Define a custom ZDType class for the int2 data type from ml_dtypes
• Implement all required methods for serialization and deserialization
• Register the custom data type with Zarr's registry
• Create and use arrays with the custom data type in both Zarr v2 and v3 formats

python examples/custom_dtype/custom_dtype.py

Or run with uv:

uv run examples/custom_dtype/custom_dtype.py