Function is_duck_array

xarray/namedarray/utils.py:78–91

(value: Any)

def is_duck_array(value: Any) -> TypeGuard[duckarray[Any, Any]]:
    # TODO: replace is_duck_array with runtime checks via _arrayfunction_or_api protocol on
    # python 3.12 and higher (see https://github.com/pydata/xarray/issues/8696#issuecomment-1924588981)
    if isinstance(value, np.ndarray):
        return True
    return (
        hasattr(value, "ndim")
        and hasattr(value, "shape")
        and hasattr(value, "dtype")
        and (
            (hasattr(value, "__array_function__") and hasattr(value, "__array_ufunc__"))
            or hasattr(value, "__array_namespace__")
        )
    )


def is_duck_dask_array(x: duckarray[Any, Any]) -> TypeGuard[DaskArray]: