11 Pull requests merged by 8 people

• fix chunk/shard iteration

  #3299 merged Aug 22, 2025

• reraise the KeyError for unknown codecs with a more specific error class

  #3395 merged Aug 21, 2025

• Added ArrayNotFoundError

  #3367 merged Aug 21, 2025

• Use PyPA well-known labels under project.urls

  #3386 merged Aug 21, 2025

• Fix typing in metadata tests

  #3393 merged Aug 21, 2025

• chore/add missing tests

  #3353 merged Aug 19, 2025

• Optimize getitem with empty chunks

  #3379 merged Aug 19, 2025

• Relax obsolete constraints on setuptools-scm

  #3385 merged Aug 19, 2025

• docs: Update the link to sharding in the Zarr roadmap

  #3380 merged Aug 18, 2025

• chore/remove chunk coords

  #3374 merged Aug 18, 2025

• Fix: respect write_empty_chunks when opening an existing array

  #3378 merged Aug 18, 2025

7 Pull requests opened by 4 people

• Bump the actions group with 2 updates

  #3381 opened Aug 18, 2025

• Bump actions/checkout from 4 to 5 in the actions group

  #3382 opened Aug 18, 2025

• Bump the requirements group with 2 updates

  #3383 opened Aug 18, 2025

• docstring cleanup

  #3390 opened Aug 19, 2025

• Add default value to init_array config param. Update docstring.

  #3391 opened Aug 20, 2025

• Raise more helpful errors in _dereference_path

  #3392 opened Aug 20, 2025

• Fix typing in store tests

  #3394 opened Aug 20, 2025

6 Issues closed by 3 people

• Appending to re-opened zarr array does not respect `write_empty_chunks`

  #2931 closed Aug 22, 2025

• Possible Regression: `'Float32' object has no attribute 'value'` raised when using zarr>3.0.10.

  #3396 closed Aug 21, 2025

• unhelpful error message for unknown codecs when opening a group

  #3384 closed Aug 21, 2025

• zarr.errors ArrayNotFoundError is gone in zarr 3.0

  #2961 closed Aug 21, 2025

• Avoid calls to `np.full`

  #3368 closed Aug 19, 2025

• do we need the `ChunkCoords` type

  #3373 closed Aug 18, 2025

3 Issues opened by 3 people

• Release Zarr-Python v3.1.2

  #3397 opened Aug 22, 2025

• DOC: Configuration value 'array.v3_default_compressors' has been removed, but is still documented

  #3389 opened Aug 19, 2025

• _dereference_path assertion error

  #3387 opened Aug 19, 2025

11 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• chore/handle numcodecs codecs

  #3376 commented on Aug 21, 2025 • 12 new comments

• Add CLI for converting v2 metadata to v3

  #3257 commented on Aug 18, 2025 • 1 new comment

• Better document acceptable values for `StoreLike`

  #3303 commented on Aug 20, 2025 • 0 new comments

• Silent failure when creating an array where there is an existing node

  #2582 commented on Aug 21, 2025 • 0 new comments

• a group metadata module is missing

  #3018 commented on Aug 22, 2025 • 0 new comments

• unified runtime type checking for our json data

  #3285 commented on Aug 23, 2025 • 0 new comments

• Fix: respect `config` when opening an existing array

  #2933 commented on Aug 22, 2025 • 0 new comments

• Parametrize Array with v2/v3 metadata

  #3304 commented on Aug 20, 2025 • 0 new comments

• Prevent mode='r+' from creating new directories

  #3307 commented on Aug 20, 2025 • 0 new comments

• Add v2 and v3 metadata support to codecs

  #3332 commented on Aug 21, 2025 • 0 new comments

• CacheStore containing source store and cache store

  #3366 commented on Aug 21, 2025 • 0 new comments