zarr-python

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Allow passing `shards` to `zarr.zeros`

1

`zarr.zeros` (and possibly other convenience functions) doesn't allow specifying shards; it would be nice if this was possible. ```python import zarr zarr.zeros(shape=(10,), chunks=(2,), shards=(4,)) ``` ```python Traceback (most recent call...

dstansby

feat/global concurrency limit

1

Makes the concurrency limit global, rather than per-function. I'm not emotionally attached to this PR -- it's largely the work of claude code. Lets use this as a starting point...

d-v-b

[v3] support for object arrays

16

Zarr-Python 2 [supported object arrays](https://zarr.readthedocs.io/en/v2.18.4/tutorial.html#object-arrays). This functionality has not made it into Zarr-Python 3 yet (in part because there is not an obvious way to develop a v3 dtype for...

jhamman

feat: Implement ZEP 8 URL syntax support for zarr-python

1

Continuation of @jhamman's #3369 with addressing my review comments Claude summary of the changes on top of Joe's PR: 1. Format Propagation ✅ - Zarr format segments (zarr2:, zarr3:) now...

ianhi

Since https://github.com/numpy/numpy/issues/28034 has been resolved, try unpinning numpy. Also, the version of google-crc32c is already constrained here: https://github.com/zarr-developers/zarr-python/blob/9f69611d3957c99653509c7cca7db96b2c395f37/pyproject.toml#L38 TODO: * [ ] Add unit tests and/or doctests in docstrings *...

DimitriPapadopoulos

SPEC 0 minimum supported python version

3

[SPEC 0](https://scientific-python.org/specs/spec-0000/) recommends that we drop support for a Python version for 3 years after its initial release. That means dropping support for python 3.11 ([released](https://www.python.org/downloads/release/python-3110/) on October, 24 2022)...

d-v-b

metadata parsing rejects zarr metadata with unknown fields

2

We must accept unknown fields that are JSON objects with `"must_understand": false`, per [the spec](https://github.com/zarr-developers/zarr-specs/blob/main/docs/v3/core/index.rst#must_understand)

d-v-b

# Issue Metrics | Metric | Average | Median | 90th percentile | | --- | --- | --- | ---: | | Time to first response | 22:23:43 |...

github-actions[bot]

re-opening `ZipStore` with a new mode

6

In `main` it's not possible to make a read-only copy of a `ZipStore` instance. Is there any particular reason why this is not allowed, or is it something we could...

d-v-b

fixed length subtype recarray + "auto" shards crashes

5

### Zarr version 3.1.4.dev29+gfc8e8ad1a ### Numcodecs version 0.16.3 ### Python Version 3.12.3 ### Operating System macOS-15.1-arm64-arm-64bit ### Installation uv pip ### Description The reproducer below fails with `shards="auto"` but works...

ilan-gold