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# Custom Data Type Example
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`](https://pypi.org/project/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
## Running the Example
```bash
python examples/custom_dtype/custom_dtype.py
```
Or run with uv:
```bash
uv run examples/custom_dtype/custom_dtype.py
```
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