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obs i.e., axis=0 column joining + anndata.concat is underspecified

good first issueeasy first issue to get started in OSS community contribution!easy first issue to get started in OSS community contribution!

topic: api

type: dataframe 🧮

Status: Open.

Enhancement

#2374 In scverse/anndata;

· ilan-gold opened on Mar 23, 2026

Lenient write

topic: io

Status: Open.

Enhancement

#2373 In scverse/anndata;

· flying-sheep opened on Mar 22, 2026

Simplify backed internal checking

Status: Open.

Enhancement

#2369 In scverse/anndata;

· ilan-gold opened on Mar 18, 2026

Error writing recarray with all nan values

Status: Open.

Bug

#2363 In scverse/anndata;

· lazappi opened on Mar 11, 2026

Setting pandas.DataFrame with ArrayView produces all NaN

topic: views 👀

Status: Open.

Bug

#2348 In scverse/anndata;

· ilan-gold opened on Feb 13, 2026

Make all warnings into errors

testing

Status: Open.

#2343 In scverse/anndata;

· flying-sheep opened on Feb 12, 2026

use pyproject-fmt

dev process

Status: Open.

Enhancement

#2337 In scverse/anndata;

· flying-sheep opened on Feb 10, 2026

·  

0.13.0

Unable to rechunk a view of a 2-d sliced AnnData with a dask array

Triage 🩺

Status: Open.

Bug

#2330 In scverse/anndata;

· joshua-gould opened on Feb 5, 2026

Why is there a need to wrap dask array views in DaskArrayView

question

Status: Open.

#2329 In scverse/anndata;

· joshua-gould opened on Feb 4, 2026

Virtual concatenation support for concat_on_disk

Status: Open.

Enhancement

#2311 In scverse/anndata;

· selmanozleyen opened on Jan 22, 2026

feat: Chunking for categorical categories string arrays only

Triage 🩺

Status: Open.

Enhancement

#2296 In scverse/anndata;

· katosh opened on Jan 14, 2026

feat: Efficient category count and partial loading for lazy AnnData

backend: hdf5

backend: zarr

topic: backed

topic: cloud ☁️

Status: Open.

Enhancement

#2283 In scverse/anndata;

· katosh opened on Jan 6, 2026