zarr 2.13.3


An implementation of chunked, compressed, N-dimensional arrays for Python.

An implementation of chunked, compressed, N-dimensional arrays for Python.

Stars: 1065, Watchers: 1065, Forks: 212, Open Issues: 254

The zarr-developers/zarr-python repo was created 7 years ago and was last updated Yesterday.
The project is very popular with an impressive 1065 github stars!

How to Install zarr

You can install zarr using pip

pip install zarr

or add it to a project with poetry

poetry add zarr

Package Details

GitHub Repo


  • Software Development/Libraries/Python Modules
No  zarr  pypi packages just yet.


A list of common zarr errors.

Code Examples

Here are some zarr code examples and snippets.

GitHub Issues

The zarr package has 254 open issues on GitHub

  • Copying HDF5 to Zarr - missing object_codec for object array
  • Bump redis from 4.1.1 to 4.1.2
  • [NO MRG] Test CI
  • Default write empty chunks false
  • add release note regarding introduction of BaseStore and KVStore
  • Sharding Prototype II: implementation on Array
  • When I repeatedly append data to a zarr array in s3, appending takes longer and longer and longer
  • [REVIEW] Support of alternative array classes
  • Add numpy encoder class for json.dumps
  • Feature Request: Advanced indexing without oindex and vindex
  • Zarrr inconsitantly returns Nans
  • Big data support
  • DOC: update pytest line
  • ModuleNotFoundError: No module named 'numcodecs' when creating dev env
  • DOC: make Creating a development environment doc copy-pastable

See more issues on GitHub