15 Pull requests merged by 9 people

• fix: Fix unit null rank

  #18252 merged Aug 18, 2024

• fix: Use physical for row-encoding

  #18251 merged Aug 18, 2024

• feat: Support empty structs

  #18249 merged Aug 18, 2024

• feat: Allow float in interpolate_by by column

  #18015 merged Aug 18, 2024

• refactor(rust): Add multiplexer node to new streaming engine

  #18241 merged Aug 16, 2024

• refactor(rust): Add feature gates for polars-python crate

  #18232 merged Aug 16, 2024

• refactor: Split py-polars crate

  #18204 merged Aug 16, 2024

• test(python): Fix test for new deltalake release

  #18211 merged Aug 16, 2024

• chore: Update the required version of rust in README.md

  #18203 merged Aug 16, 2024

• docs(python): Fix column name output in example of DataFrame.map_rows

  #18227 merged Aug 16, 2024

• fix(python): Convert date and datetime in literal construction

  #16018 merged Aug 15, 2024

• test(python): Fix version bifurcation for test_read_database_cx_credentials

  #18220 merged Aug 15, 2024

• refactor(rust): Add itertools in utils

  #18213 merged Aug 15, 2024

• feat(python): Make show_versions more responsive

  #18208 merged Aug 15, 2024

• perf: Speedup ndjson reader ~40%

  #18197 merged Aug 15, 2024

10 Pull requests opened by 8 people

• feat(python): Allow mapping as syntactic sugar in `str.replace_many`

  #18214 opened Aug 15, 2024

• feat(python): Support "indexed" dicts as input to `from_dict` and `from_dicts`

  #18215 opened Aug 15, 2024

• fix: Categorical `unpivot`

  #18216 opened Aug 15, 2024

• docs(python): Add missing "Parameters" section to `bin.size` expr docstring

  #18222 opened Aug 15, 2024

• perf: Use direct path for `time`/`timedelta` literals

  #18223 opened Aug 15, 2024

• docs(python): Improve formatting and consistency of various docstrings

  #18237 opened Aug 16, 2024

• fix(rust): Make json readers ignore BOM character

  #18240 opened Aug 16, 2024

• fix: Consistently round half-way points down in dt.round

  #18245 opened Aug 17, 2024

• fix: Compute joint null mask before calling rolling corr/cov stats

  #18246 opened Aug 18, 2024

• Fix: Add option to drop empty row in excel to fix auto dropping of empty rows

  #18253 opened Aug 18, 2024

14 Issues closed by 7 people

• rank() on a Series of just 1 null assigns rank=1 to the null value.

  #18243 closed Aug 18, 2024

• rank().over() replaces wrongly assigns rank=1 to null values in the case that the over() group has a size of 1.

  #17570 closed Aug 18, 2024

• `.implode().list` method is not valid before `.over`.

  #18225 closed Aug 18, 2024

• `read_json` fails on empty objects

  #10234 closed Aug 18, 2024

• Interpolate based on other Float64 column

  #16794 closed Aug 18, 2024

• `pivot` docs do not describe different between `index` and `values` arguments

  #17967 closed Aug 17, 2024

• Expr `.implode().get().over()` has strange results.

  #18228 closed Aug 16, 2024

• [Python] Scan_pyarrow_dataset() no longer pushes down partition filtering to pyarrow

  #14343 closed Aug 16, 2024

• Upgrading to 0.42 breaks compilation

  #18226 closed Aug 16, 2024

• Cannot load CSV file with single column and empty lines at start

  #18071 closed Aug 16, 2024

• `dtype` ingored in `pl.lit` between date and datetime

  #16012 closed Aug 15, 2024

• `test_read_database_cx_credentials` expected exception does not bifurcate over correct Python version

  #18218 closed Aug 15, 2024

• release new Rust Polars version on crates.io?

  #18125 closed Aug 15, 2024

• Request to return LazyFrame for pl.from_arrow and more

  #18212 closed Aug 15, 2024

17 Issues opened by 16 people

• Polars ignoring rows that are empty in Excel

  #18250 opened Aug 18, 2024

• Inconsistent rolling results when using temporal windows

  #18248 opened Aug 18, 2024

• Dependencies not recognized

  #18247 opened Aug 18, 2024

• read_ndjson ignores provided schema list inner types if values are inferred null

  #18244 opened Aug 17, 2024

• write_parquet with partition_by silently overwrites existing files

  #18242 opened Aug 16, 2024

• `dt.round()` slow/fast path use different rounding

  #18239 opened Aug 16, 2024

• ExprStringNameSpace replace / replace_all literal flag ignored for dataframes with multiple rows

  #18238 opened Aug 16, 2024

• Inconsistent Results Between Pandas and Polars using cut (and qcut)?

  #18236 opened Aug 16, 2024

• Multi-output, multi-sink lazy polars

  #18235 opened Aug 16, 2024

• `.struct.field()` after `shuffle()` seems to produce incorrect results

  #18234 opened Aug 16, 2024

• `Expr.shuffle` uses different order per column

  #18233 opened Aug 16, 2024

• `.first` behind `.sort_by.slice` gets wrong result.

  #18231 opened Aug 16, 2024

• Behaviour change of Expr.list.drop_nulls for structs with all None fields

  #18230 opened Aug 16, 2024

• upsample not working if arguments are only sorted within group

  #18229 opened Aug 16, 2024

• In `bin.size()`, the `unit` parameter is not described

  #18221 opened Aug 15, 2024

• In `scan_parquet()`, `include_file_paths` returns twice the same column

  #18219 opened Aug 15, 2024

• rolling_corr giving inconsistent results

  #18217 opened Aug 15, 2024

23 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• refactor(rust): Add parquet source node to new streaming engine

  #18152 commented on Aug 17, 2024 • 12 new comments

• fix: Raise suitable error on unsupported `SQL` set op syntax

  #18205 commented on Aug 17, 2024 • 0 new comments

• fix: Fix panic streaming parquet scan from cloud with slice

  #18202 commented on Aug 15, 2024 • 0 new comments

• docs: Possibly fix table display issue

  #18187 commented on Aug 15, 2024 • 0 new comments

• feat: Add devcontainer for local development and GitHub Codespaces support

  #18132 commented on Aug 17, 2024 • 0 new comments

• fix(rust): Address replacing all array elements with nulls for `map_elements`

  #17934 commented on Aug 15, 2024 • 0 new comments

• fix: Use appropriate bins in `hist` when `bin_count` specified

  #16942 commented on Aug 16, 2024 • 0 new comments

• Support empty structs

  #9216 commented on Aug 18, 2024 • 0 new comments

• `str.json_decode` panics on `{}` entry

  #15720 commented on Aug 18, 2024 • 0 new comments

• When using calamine engine to read Excel files, empty rows are automatically ignored by default

  #14874 commented on Aug 18, 2024 • 0 new comments

• Support for handling duplicate timestamps in rolling operations similar to Pandas

  #18126 commented on Aug 18, 2024 • 0 new comments

• Allow `pl.Expr.get` handle null index values in Aggregation context so that `pl.Expr.arg_min/arg_max` is always valid input

  #15163 commented on Aug 17, 2024 • 0 new comments

• expose `null_on_oob` on `gather`.

  #16842 commented on Aug 17, 2024 • 0 new comments

• Normalize JSON

  #7078 commented on Aug 16, 2024 • 0 new comments

• `fill_null` resulting data type is incorrect in some cases

  #13789 commented on Aug 16, 2024 • 0 new comments

• Ability for str.extract_all to return only capture groups

  #16602 commented on Aug 16, 2024 • 0 new comments

• Parquet files cannot be read from pre-signed S3 URLs due to S3 forbidding HTTP HEAD

  #18186 commented on Aug 16, 2024 • 0 new comments

• Do not enclose str items in quotes in HTML repr

  #18102 commented on Aug 16, 2024 • 0 new comments

• PanicException: implementation error in fill_null

  #18051 commented on Aug 15, 2024 • 0 new comments

• can write empty parquet but not read

  #13457 commented on Aug 15, 2024 • 0 new comments

• Split off list constructor logic from `pl.concat_list` into `pl.list`

  #8510 commented on Aug 15, 2024 • 0 new comments

• scan_pyarrow_dataset not filtering on partitions

  #16300 commented on Aug 15, 2024 • 0 new comments

• `Expr.replace` and `Expr.replace_strict` set "NO_DEFAULT" as a value

  #18185 commented on Aug 15, 2024 • 0 new comments