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perf: more efficient _sparse_nanmean

Status: Open (in progress).

scverse/scanpynumber 3570

#3570 In scverse/scanpy;

· Reovirus opened on Apr 8, 2025

docs: add inline example of pca_variance_ratio

Status: Open (in progress).

scverse/scanpynumber 3950

#3950 In scverse/scanpy;

· marvinbuff opened on Jan 22, 2026

fix: regress_out for more threads than 64

Status: Open (in progress).

scverse/scanpynumber 3954

#3954 In scverse/scanpy;

· Intron7 opened on Jan 26, 2026

perf: "two-pass" seurat hvg via scanpy.get.aggregate

Status: Draft (not ready).

scverse/scanpynumber 4013

#4013 In scverse/scanpy;

· ilan-gold opened on Mar 26, 2026

race condition breaks parallel run of sc.datasets functions (e.g. in tests)

Area - DatasetsRelated to sc.datasets moduleRelated to sc.datasets module

Status: Open.

Bug

#4097 In scverse/scanpy;

· flying-sheep opened on Apr 28, 2026

fix: use get_igraph_from_adjacency for graph construction

Status: Open (in progress).

scverse/scanpynumber 4112

#4112 In scverse/scanpy;

· flying-sheep opened on May 8, 2026

perf: memory usage for dask pca

Status: Open (in progress).

scverse/scanpynumber 4126

#4126 In scverse/scanpy;

· ilan-gold opened on May 15, 2026