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Published July 7, 2024 | Version py-1.1.0
Software Open

pola-rs/polars: Python Polars 1.1.0

Authors/Creators

  • 1. @pola-rs
  • 2. Quansight
  • 3. @alibaba
  • 4. Polars
  • 5. @aertslab
  • 6. University of California, Berkeley
  • 7. @coralogix
  • 8. @QuantCo
  • 9. Munin Data ApS
  • 10. forml.eu
  • 11. @Quantco
  • 12. ASML

Description

🚀 Performance improvements

  • Keep more parallelism when CSE plan cache hits (#17463)
  • Batch parquet primitive decoding (#17462)
  • Respect allow_threading in some more operators (#17450)
  • Parallelize parquet metadata deserialization (#17399)
  • Use underlying fileno for Python files when possible (#17315)
  • Add future arg to Series.to_arrow (#17371)

✨ Enhancements

  • add "future" versioning (#17421)
  • Apply slice pushdown immediately to in-memory frames (#17459)
  • Support writing hive partitioned parquet (#17324)
  • Add right join support (#17441)
  • Support hive partitioning in scan_ipc (#17434)
  • Improve error message when passing string key to Series.__getitem__ (#17408)

🐞 Bug fixes

  • Handle DB cursor descriptions that contain more fields than the DBAPI2 standard (#17468)
  • Fix decimal dyn float supertype (#17464)
  • Verify the integrity of pandas column names before implied string conversion (#17433)
  • Don't rechunk on phys_repr (#17461)
  • Harden alchemy session for old sqlalchemy versions (#17366)
  • Fix swapping rename schema (#17458)
  • Make boolean reads consistent across all read_excel engines (#17448)
  • Raise on oob decimal precision (#17445)
  • Fix handling of TextIOWrapper in write_csv (#17328)
  • Support sa session (#17435)
  • Fix from_pandas for string columns with missing values (#17397)
  • Fix a global variable table-discovery edge case for the SQL interface (#17400)
  • Don't allow json inference method to be chunked/streaming (#17396)
  • Set literal nesting to 0 (#17392)
  • Fix scanning cloud paths with spaces (#17379)
  • Fix slice length no longer allowing None (#17372)
  • Fix typo in SchemaError exception message (#17350)
  • Raise proper error for mismatching parquet schema instead of panicking (#17321)

📖 Documentation

  • Add examples for scanning hive datasets to user guide (#17431)
  • Update partition_by docstring to match new behavior (#17394)
  • Update GroupBy.__iter__ docstring to match new behavior (#17383)

📦 Build system

  • Add support for NumPy 2.0 (#17384)

🛠️ Other improvements

  • Add automated check for PR title formatting (#17412)
  • Remove transmute for object store path (#17395)
  • Fix Python version resolver in release drafter (#17390)
  • Avoid use of np.trapz in tests to prepare for NumPy 2.0 (#17387)
  • Avoid writing to disk when running sink_csv test (#17386)

Thank you to all our contributors for making this release possible! @alexander-beedie, @brunobbaraujo, @cmdlineluser, @coastalwhite, @dependabot, @dependabot[bot], @nameexhaustion, @orlp, @phi-friday, @ritchie46, @ruihe774, @sherlockbeard, @stinodego, @tylerriccio33 and @wence-

Files

pola-rs/polars-py-1.1.0.zip

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Additional details

Related works

Is supplement to
Software: https://github.com/pola-rs/polars/tree/py-1.1.0 (URL)