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Dataframes powered by a multithreaded, vectorized query engine, written in Rust

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Polars py-0.19.18

Polars: py-0.19.18 Release

Release date:

November 29, 2023

Previous version:

py-0.19.17 (released November 27, 2023)

Magnitude:

474 Diff Delta

Contributors:

11 total committers

Data confidence:

Commits:

20 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

feat(python): Improve `write_database`, accounting for latest `adbc` fixes/updates (#12713)

Authored November 28, 2023

refactor(rust): simplify rolling_median update (#12745)

Authored November 28, 2023

fix: hold align_chunks_invariant (#12738)

Authored November 28, 2023

feat: support nested null in vstack/append/extend/concat (#12771)

Authored November 29, 2023

feat: Improve error messages on attempted Arrow conversions involving incompatible/unknown dtypes (#12421)

Authored November 29, 2023

numpy array with 2 dimensions with a schema of same second dimension give a DataFrame with same dimension and same type, even with only one column (#12746)

Authored November 28, 2023

feat(rust): implement From<LazyGroupBy> for LazyFrame (#12562)

Authored November 28, 2023

docs(python): Fix invalid references to `xlsx2csv` dependency (#12741)

Authored November 28, 2023

fix(python): Enable special casing of sequence in list_to_struct (#12759)

Authored November 29, 2023

build: Use latest `atoi_simd` release (#12748)

Authored November 29, 2023

feat: determine mode parallelism depending on current tasks (#12764)

Authored November 29, 2023

fix: don't use streaming engine if aggregate is unknown (#12769)

Authored November 29, 2023

python polars 0.19.18 (#12772)

Authored November 29, 2023

feat: enable slice push down past `with_columns` (#12742)

Authored November 28, 2023

fix: allow leading zero and plus in integer parsing (#12744)

Authored November 28, 2023

fix: csv lines iter, always return remainder (#12739)

Authored November 28, 2023

fix: fix oob in set operations (#12736)

Authored November 28, 2023

chore(python): Remove pinned `aiohttp` dependency (#12733)

Authored November 28, 2023

fix: undo regression in ability to read certain parquet files (#12731)

Authored November 28, 2023

chore(python): bump aiohttp from 3.9.0b1 to 3.9.0 in /py-polars (#12732)

Authored November 28, 2023

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Top Contributors in py-0.19.18

alexander-beedie

ritchie46

PierreAttard

eitsupi

0siride

dependabot-bot

RoDmitry

stinodego

nameexhaustion

orlp

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Release Notes Published

✨ Enhancements

support nested null in vstack/append/extend/concat (#12771)
Improve error messages on attempted Arrow conversions involving incompatible/unknown dtypes (#12421)
determine mode parallelism depending on current tasks (#12764)
enable slice push down past with_columns (#12742)
Improve write_database, accounting for latest adbc fixes/updates (#12713)

🐞 Bug fixes

don't use streaming engine if aggregate is unknown (#12769)
Enable special casing of sequence in list_to_struct (#12759)
hold align_chunks_invariant (#12738)
allow leading zero and plus in integer parsing (#12744)
csv lines iter, always return remainder (#12739)
fix oob in set operations (#12736)
undo regression in ability to read certain parquet files (#12731)

🛠️ Other improvements

Use latest atoi_simd release (#12748)
Fix invalid references to xlsx2csv dependency (#12741)
Remove pinned aiohttp dependency (#12733)

Thank you to all our contributors for making this release possible! @0siride, @PierreAttard, @RoDmitry, @alexander-beedie, @dependabot, @dependabot[bot], @eitsupi, @kszlim, @nameexhaustion, @orlp, @ritchie46 and @stinodego