Dask.array.from_zarr() error

Dask Array
,
1

I’ve saved a zarr using dask.array.to_zarr() with dask=2022.10.2 build pyhd8ed1ab_0

I then tried to read it on my virtual machine using dask.array.from_zarr() with dask= 2024.8.2 build py312h06a4308_0.

I get the following error:

File ~/anaconda3/envs/ct-env/lib/python3.12/site-packages/dask/array/core.py:3625, in from_zarr(url, component, storage_options, chunks, name, inline_array, **kwargs) 3622
import zarr 3624
storage_options = storage_options or {} → 3625
if isinstance(url, zarr.Array): 3626
z = url 3627
elif isinstance(url, (str, os.PathLike)):
AttributeError: module ‘zarr’ has no attribute ‘Array’

2

Apparently I needed to install and import the zarr module, in addition to dask. When I did that it worked.

1 Like
3

Installing zarr is indeed required, importing it should not.

4

That seems true.

Maybe the error information would be more useful if it suggested to install the zarr package.