Issues

Loose ends found while preparing the recent PRs (not fixed; for triage)

Blosc/python-blosc2#790 · opened

on Nov 7, 2026

NDArray.setitem with steps writes wrong data when the value is the array itself (b[::-1] = b)

Blosc/python-blosc2#776 · opened

on Nov 6, 2026

NDArray.setitem raises AttributeError for list index keys

Blosc/python-blosc2#764 · opened

on Nov 5, 2026

Lazy expressions and reductions could skip special (zero / repeated-value) chunks

Blosc/python-blosc2#761 · opened

on Nov 5, 2026

In-place operators on NDArray (a *= 2) return a LazyExpr and leave the array unchanged

Blosc/python-blosc2#760 · opened

on Nov 5, 2026

logaddexp() of integer arrays gives float32, where NumPy gives float64

Blosc/python-blosc2#757 · opened

on Nov 3, 2026

Keep integer true division, hypot() and nextafter() away from the bundled miniexpr until it is fixed

Blosc/python-blosc2#756 · opened

on Nov 3, 2026

Invalid --chunks/--shards arguments to b2nd-to-zarr deletes destination with --force

Blosc/python-blosc2#731 · opened

on Oct 4, 2026

[DOC] Container Architecture & Chunking Sizing Guide (Decision Matrix)

Blosc/python-blosc2#722 · opened

on Sep 23, 2026

[DOC] Runnable docstring examples and doctest coverage for core constructors

Blosc/python-blosc2#720 · opened

on Sep 23, 2026

3

[GUIDE] Zero-Copy Out-of-Core Processing with Memory-Mapped Files (`mmap`)

Blosc/python-blosc2#719 · opened

on Sep 23, 2026

1

[TUTORIAL] Advanced CTable: Schemas, Mutations, & Nullable Data

Blosc/python-blosc2#718 · opened

on Sep 23, 2026

[GUIDE] Interoperability with Polars, DuckDB, and PyArrow (Zero-Copy Analytics)

Blosc/python-blosc2#717 · opened

on Sep 23, 2026

[UTILS] Implement `b2info` CLI tool for instant container inspection

Blosc/python-blosc2#716 · opened

on Sep 23, 2026

4

[TUTORIAL] Hierarchical datasets with `TreeStore`

Blosc/python-blosc2#715 · opened

on Sep 23, 2026

3

[GUIDE] Walkthrough for `b2nd-to-zarr` CLI tool

Blosc/python-blosc2#714 · opened

on Sep 23, 2026

[GUIDE] Improve the remote array guide

Blosc/python-blosc2#710 · opened

on Sep 15, 2026

DictStore: a multi-chunk external leaf can be read across a concurrent overwrite, mixing two generations

Blosc/python-blosc2#693 · opened

on Aug 6, 2026

Reductions return NumPy objects eagerly but blosc2 arrays lazily

Blosc/python-blosc2#689 · opened

on Aug 5, 2026

[WASM] SChunk.getitem/get_slice raises RuntimeError on Pyodide 0.29.4 (works on 0.29.3 and 314.0.0)

Blosc/python-blosc2#664 · opened

on Jun 15, 2026

1

[UTILS] Improve b2view TUI

Blosc/python-blosc2#653 · opened

on Jun 2, 2026

2

[BENCH] Real-world query performance comparison

Blosc/python-blosc2#652 · opened

on Jun 2, 2026

[DOC] Tutorial: variable-length columns (ListArray and BatchArray)

Blosc/python-blosc2#649 · opened

on Jun 2, 2026

Document SUMMARY indexes for end users

Blosc/python-blosc2#645 · opened

on Jun 2, 2026

1

[Tutorial] CTable copy() with reblocking and recompression

Blosc/python-blosc2#644 · opened

on Jun 2, 2026

2

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Issues

Loose ends found while preparing the recent PRs (not fixed; for triage)

NDArray.setitem with steps writes wrong data when the value is the array itself (b[::-1] = b)

NDArray.setitem raises AttributeError for list index keys

Lazy expressions and reductions could skip special (zero / repeated-value) chunks

In-place operators on NDArray (a *= 2) return a LazyExpr and leave the array unchanged

logaddexp() of integer arrays gives float32, where NumPy gives float64

Keep integer true division, hypot() and nextafter() away from the bundled miniexpr until it is fixed

Invalid --chunks/--shards arguments to b2nd-to-zarr deletes destination with --force

[DOC] Container Architecture & Chunking Sizing Guide (Decision Matrix)

[DOC] Runnable docstring examples and doctest coverage for core constructors

[GUIDE] Zero-Copy Out-of-Core Processing with Memory-Mapped Files (`mmap`)

[TUTORIAL] Advanced CTable: Schemas, Mutations, & Nullable Data

[GUIDE] Interoperability with Polars, DuckDB, and PyArrow (Zero-Copy Analytics)

[UTILS] Implement `b2info` CLI tool for instant container inspection

[TUTORIAL] Hierarchical datasets with `TreeStore`

[GUIDE] Walkthrough for `b2nd-to-zarr` CLI tool

[GUIDE] Improve the remote array guide

DictStore: a multi-chunk external leaf can be read across a concurrent overwrite, mixing two generations

Reductions return NumPy objects eagerly but blosc2 arrays lazily

[WASM] SChunk.getitem/get_slice raises RuntimeError on Pyodide 0.29.4 (works on 0.29.3 and 314.0.0)

[UTILS] Improve b2view TUI

[BENCH] Real-world query performance comparison

[DOC] Tutorial: variable-length columns (ListArray and BatchArray)

Document SUMMARY indexes for end users

[Tutorial] CTable copy() with reblocking and recompression