installation.rst

Installation

pip

$ pip install zarr

There are a number of optional dependency groups you can install for extra functionality. These can be installed using pip install "zarr[<extra>]", e.g. pip install "zarr[gpu]"

• gpu: support for GPUs
• fsspec: support for reading/writing to remote data stores
• tree: support for pretty printing of directory trees

conda

$ conda install -c conda-forge zarr

Conda does not support optional dependencies, so you will have to manually install any packages needed to enable extra functionality.

Dependency support

Zarr has endorsed Scientific-Python SPEC 0 and now follows the version support window as outlined below:

• Python: 36 months after initial release
• Core package dependencies (e.g. NumPy): 24 months after initial release

Development

To install the latest development version of Zarr, see the contributing guide.