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Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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Polars py-0.16.9

Polars: py-0.16.9 Release

Release date:
February 26, 2023
Previous version:
py-0.16.8 (released February 22, 2023)
Magnitude:
5,129 Diff Delta
Contributors:
15 total committers
Data confidence:
Commits:
50 impacting commits

50 Commits in this Release

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

feat(rust): add sort maintaining order row encoding (#7117)
Authored February 24, 2023
refactor(rust): simplify binary expression evaluation (#7195)
Authored February 26, 2023
feat(rust,python): add glob support to scan_ndjson (#7143)
Authored February 24, 2023
fix(rust, python): validate trees before inserting streaming node (#7179)
Authored February 25, 2023
docs(python): examples functional programing (#7135)
Authored February 23, 2023
feat(python, rust, sql): additional read functions (#7102)
Authored February 23, 2023
feat(python,rust): Improve usability of Null type. (#7136)
Authored February 24, 2023
perf(rust, python): improve single argument elementwise expression pe… (#7180)
Authored February 25, 2023
perf(python): optimize `sequence_to_pydf` (#7044)
Authored February 25, 2023
refactor(python): Add Series.cut, deprecate pl.cut (#7058)
Authored February 25, 2023
feat(python): Allow pl.Int32 Series as output in eager repeat. (#7152)
Authored February 24, 2023
fix(rust, python): don't let a cast unset agg_state and keep logical … (#7151)
Authored February 24, 2023
fix(rust, python): respect f32 schema in deep expressions (#7146)
Authored February 24, 2023
fix(rust, python): fix list take logical types (#7163)
Authored February 24, 2023
feat(rust, python): streaming: scale chunk_size on table width (#7119)
Authored February 23, 2023
fix(rust, python); make list function 'map' and refactor multi-arg ex… (#7185)
Authored February 25, 2023
fix(rust): make CSV reader respect n_rows with globbing (#6969)
Authored February 23, 2023
feat(python): add Expr.pipe (#7134)
Authored February 24, 2023
fix(rust, python): fix deadlock in scan_csv()->sink_parquet() (#7118)
Authored February 23, 2023
feat(python): More ergonomic `explode` args (#7115)
Authored February 23, 2023
refactor(python): Deprecate pl.get_dummies (#7055)
Authored February 25, 2023
perf(rust, python): improve perf of multi-args exprs in groupby context (#7186)
Authored February 26, 2023
fix(python): subtracting Series from date has wrong sign (#7107)
Authored February 23, 2023
feat(python): add a `base_type` method to `DataType` (#7166)
Authored February 25, 2023
fix(python): fix return type of `_unpack_schema` to prevent potential TypeError (#7128)
Authored February 24, 2023
doc(python): Link arr.explode and reshape docstrings and add missing … (#7161)
Authored February 24, 2023
fix(python): fix df division dispatch (#7155)
Authored February 24, 2023
fix(python): Raise ValueError for getitem when column indexes are out… (#7167)
Authored February 24, 2023
doc(python): Improve read_csv docstring for infer_schema_length, dtyp… (#7156)
Authored February 24, 2023
ci(python,rust): Build versioned API reference (#7114)
Authored February 23, 2023
fix(rust, python): expose sort expressions to stack-optimizer (#7148)
Authored February 24, 2023
fix(rust, python): fix panic on cum_prod (#7141)
Authored February 24, 2023
fix(rust, python): improve error message when read_csv fails (#7150)
Authored February 24, 2023
refactor(rust, python): ensure binary branches are executed in parall… (#7193)
Authored February 26, 2023
fix(python): Fix Series.argsort (#7183)
Authored February 25, 2023
fix(rust, python): make cast unknown a no-op (#7147)
Authored February 24, 2023
feat(rust, python): show column name if read_csv errors (#7177)
Authored February 26, 2023
feat(rust, python): add explode for binary (#7159)
Authored February 24, 2023
doc(python): Make python polars.DataFrame.sample shuffle description more explicit (#7184)
Authored February 25, 2023
test(python): add test to guard against accidental reintroduction of `unit/io/__init__` (#7116)
Authored February 23, 2023

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Top Contributors in py-0.16.9

ritchie46
ghuls
mslapek
zundertj
universalmind303
romano-vacca-88f5
jakob-keller
stinodego
MarcoGorelli
josh

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Release Notes Published

🚀 Performance improvements

  • improve perf of multi-args exprs in groupby context (#7186)
  • optimize sequence_to_pydf (#7044)
  • improve single argument elementwise expression pe… (#7180)

✨ Enhancements

  • show column name if read_csv errors (#7177)
  • support direct LazyFrame init (same params as DataFrame) (#7122)
  • add a base_type method to DataType (#7166)
  • add explode for binary (#7159)
  • add binary apply (#7160)
  • Allow pl.Int32 Series as output in eager repeat. (#7152)
  • improve error message when read_csv fails (#7150)
  • Improve usability of Null type. (#7136)
  • add glob support to scan_ndjson (#7143)
  • add Expr.pipe (#7134)
  • streaming: scale chunk_size on table width (#7119)
  • additional read functions (#7102)
  • More ergonomic explode args (#7115)

🐞 Bug fixes

  • fix(rust, python); make list function 'map' and refactor multi-arg ex… (#7185)
  • Fix Series.argsort (#7183)
  • validate trees before inserting streaming node (#7179)
  • Raise ValueError for getitem when column indexes are out… (#7167)
  • fix list take logical types (#7163)
  • fix null cmp fast paths (#7157)
  • fix df division dispatch (#7155)
  • don't panic un unsupported arithmetic type (#7154)
  • don't let a cast unset agg_state and keep logical … (#7151)
  • expose sort expressions to stack-optimizer (#7148)
  • improve error message when read_csv fails (#7150)
  • make cast unknown a no-op (#7147)
  • fix panic on cum_prod (#7141)
  • respect f32 schema in deep expressions (#7146)
  • fix return type of _unpack_schema to prevent potential TypeError (#7128)
  • fix docstring in set_tbl_cols() (#7121)
  • fix deadlock in scan_csv()->sink_parquet() (#7118)
  • subtracting Series from date has wrong sign (#7107)
  • fix scan_ipc receiving storage_options (#7085)
  • nested sql exprs (#7112)

🛠️ Other improvements

  • ensure binary branches are executed in parall… (#7193)
  • Deprecate pl.get_dummies (#7055)
  • Add Series.cut, deprecate pl.cut (#7058)
  • examples functional programing (#7135)
  • fix docstring in set_tbl_cols() (#7121)
  • Build versioned API reference (#7114)

Thank you to all our contributors for making this release possible! @MarcoGorelli, @Trippy3, @alexander-beedie, @foxcroftjn, @ghuls, @iamsmkr, @jakob-keller, @josh, @mslapek, @papparapa, @ritchie46, @romanovacca, @stinodego, @universalmind303 and @zundertj

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