Repository navigation

[MNT] narwhals migration - #965

Open

solegalli wants to merge 75 commits into

mainfrom

narwhals-migration

Commits on Aug 24, 2026
- start narwhals migration
  solegalli
  committed
  fbbf160
- fix doc test
  solegalli
  committed
  7f33552
- refactor dataframe checks to accept narwahls dfs (#966)
  solegalli
  committed
  ce81a1e
- Remove sklearn<=1.6 compatibility code (#985)
  solegalli
  committed
  4025eec
- address review feedback on dataframe_checks.py (#989)
  
  solegalli
  and
  claude
  committed
  a814ae4
- refactor variable handling module for narwahls (#978)
  
  solegalli
  and
  claude
  committed
  ff5d212
- refactor creation base for narwhals compatibility (#990)
  solegalli
  authored
  45b9d1a
- Migrate CyclicalFeatures to narwhals, add polars support (#991)
  solegalli
  authored
  0d32d83
- Migrate GeoDistanceFeatures to narwhals, add polars support (#993)
  solegalli
  authored
  13187db
- Migrate MathFeatures to narwhals, add polars support (#994)
  
  solegalli
  and
  claude
  authored
  85be399
- Migrate RelativeFeatures to narwhals+numpy, add polars support (#995)
  
  solegalli
  and
  claude
  authored
  295f9d1
- Migrate DecisionTreeFeatures to narwhals, add polars support (#996)
  
  solegalli
  and
  claude
  authored
  ed91d48
Commits on Aug 25, 2026
- Migrate ReciprocalTransformer to narwhals, add polars support (#997)
  
  solegalli
  and
  claude
  authored
  b766a5b
- Migrate ArcsinTransformer to narwhals, add polars support (#998)
  
  solegalli
  and
  claude
  authored
  53a11b9
- Migrate ArcSinhTransformer to narwhals, add polars support (#1000)
  
  solegalli
  and
  claude
  authored
  9b3b226
- Migrate PowerTransformer to narwhals, add polars support (#1005)
  
  solegalli
  and
  claude
  authored
  0e105a9
- Migrate BoxCoxTransformer to narwhals, add polars support (#1006)
  
  solegalli
  and
  claude
  authored
  08a06a0
- Migrate YeoJohnsonTransformer to narwhals, add polars support (#1007)
  
  solegalli
  and
  claude
  authored
  5695fa7
- Migrate LogTransformer/LogCpTransformer to narwhals, add polars support (#1008)
  
  solegalli
  and
  claude
  authored
  ddbb256
Commits on Aug 30, 2026
- Short-circuit _check_contains_na when variables list is empty (#1018)
  
  solegalli
  and
  claude
  authored
  fd4f8ee
- Return narwhals frame from check_X / check_X_y (#1019)
  
  solegalli
  and
  claude
  authored
  ec26810
- Adapt creation transformers to narwhals-returning check_X (#1020)
  
  solegalli
  and
  claude
  authored
  50b2d3a
- Adapt numerical base transformers to narwhals-returning check_X (#1022)
  solegalli
  authored
  0fca9c6
- Migrate BaseImputer to narwhals, add polars support (#1002)
  
  solegalli
  and
  claude
  authored
  04c88dc
- update base imputer again (#1023)
  solegalli
  authored
  211d79e
- Narwhals mean median imputer (#1015)
  
  solegalli
  and
  claude
  authored
  73c0041
- Narwhals end tail imputer (#1013)
  
  solegalli
  and
  claude
  authored
  6e0a299
- Migrate ArbitraryImputer to narwhals, add polars support (#1003)
  
  solegalli
  and
  claude
  authored
  8049df6
- migrate missing indicator to narwhals, add polar support (#1001)
  
  solegalli
  and
  claude
  authored
  614493f
- Narwhals random sample imputer (#1014)
  
  solegalli
  and
  claude
  authored
  13ac25d
- Narwhals drop missing data (#1016)
  
  solegalli
  and
  claude
  authored
  2f24611
- Narwhals categorical imputer (#1009)
  
  solegalli
  and
  claude
  authored
  1fc1ea7
- Fix RandomSampleImputer and DropMissingData on non-pandas backends (#1024)
  
  solegalli
  and
  claude
  authored
  6def4de
- Migrate DatetimeOrdinal to narwhals+numpy, add polars support (#1010)
  
  solegalli
  and
  claude
  authored
  a98990a
- Migrate DatetimeFeatures to narwhals, add polars support (#1011)
  
  solegalli
  and
  claude
  authored
  d50bb28
- Migrate DatetimeSubtraction to narwhals+numpy, add polars support (#1012)
  
  solegalli
  and
  claude
  authored
  2b8bcf3
- Migrate CategoricalMethodsMixin (encoding base) to narwhals, add pola… (#999)
  
  solegalli
  and
  claude
  authored
  b430464
Commits on Sep 14, 2026
- Migrate CountEncoder/CountFrequencyEncoder to narwhals, add polars support (#1025)
  
  solegalli
  and
  claude
  authored
  dd77a3b
Commits on Sep 15, 2026
- Add shared backend test fixtures and helpers for narwhals-migrated tests (#1045)
  
  solegalli
  and
  claude
  authored
  c6ee2d7
- Use shared backend test structure in imputation tests, fix DropMissingData output type (#1046)
  
  solegalli
  and
  claude
  authored
  d6e2bf9
- Migrate MeanEncoder.fit() to narwhals, add polars support (#1027)
  
  solegalli
  and
  claude
  authored
  b63a13b
- Add add_target_to_X helper and check init parameter types in encoders (#1047)
  
  solegalli
  and
  claude
  authored
  79d9210
- Migrate OrdinalEncoder.fit() to narwhals, add polars support (#1029)
  
  solegalli
  and
  claude
  authored
  f83c278
- Migrate WoEEncoder to narwhals, add polars support (#1032)
  
  solegalli
  and
  claude
  authored
  9e4e99b
- Add conventions from encoder and imputer work to AGENTS.md (#1048)
  
  solegalli
  and
  claude
  authored
  3dca47a
- Shorten n_jobs docstring in DecisionTreeFeatures (#1049)
  
  solegalli
  and
  claude
  authored
  e2e3ff3
- Migrate OneHotEncoder to narwhals, add polars support (#1028)
  
  solegalli
  and
  claude
  authored
  e8a5ec7
Commits on Sep 16, 2026
- Migrate RareLabelEncoder to narwhals, add polars support (#1030)
  
  solegalli
  and
  claude
  authored
  d2cf470
- Migrate StringSimilarityEncoder to narwhals, add polars support (#1031)
  
  solegalli
  and
  claude
  authored
  9645583
Commits on Sep 18, 2026
- Migrate BaseDiscretiser to narwhals, add polars support (#1037)
  
  solegalli
  and
  claude
  authored
  0cd65c3
- Migrate ArbitraryDiscretiser to narwhals, add polars support (#1038)
  
  solegalli
  and
  claude
  authored
  d2bd9a1
- Migrate EqualWidthDiscretiser to narwhals, add polars support (#1040)
  
  solegalli
  and
  claude
  authored
  1003a7d
- Migrate EqualFrequencyDiscretiser.fit() to narwhals, add polars support (#1039)
  
  solegalli
  and
  claude
  authored
  c5e5a2d
- Migrate GeometricWidthDiscretiser.fit() to narwhals, add polars support (#1041)
  
  solegalli
  and
  claude
  authored
  c3cfc9d
- Note typical data sizes per backend for benchmarks in AGENTS.md (#1052)
  
  solegalli
  and
  claude
  authored
  9a875cf
- Migrate DecisionTreeDiscretiser to narwhals, add polars support (#1042)
  
  solegalli
  and
  claude
  authored
  441ed3e
- Support integer column names in DecisionTreeDiscretiser and EqualWidthDiscretiser (#1058)
  
  solegalli
  and
  claude
  authored
  02dc270
- Migrate DecisionTreeEncoder to narwhals, add polars support (#1026)
  
  solegalli
  and
  claude
  authored
  7df586c
- Call is_pandas_dataframe in conditions instead of storing it in creation transformers (#1057)
  
  solegalli
  and
  claude
  authored
  491f945
- [MNT] migrate scaling module to narwhals (#1004)
  
  authored
  e991a95
- Move discretiser helper functions into their classes as private methods (#1053)
  
  solegalli
  and
  claude
  authored
  4241811
- Note in AGENTS.md that user-facing docs are written for users, not maintainers (#1055)
  
  solegalli
  and
  claude
  authored
  62cbea8
- Note in AGENTS.md to call boolean checks directly in conditions (#1056)
  
  solegalli
  and
  claude
  authored
  be430f6
- Use the numpydoc Returns section header so return values render (#1044)
  VenishPaneliya
  authored
  2e0841f
Commits on Sep 19, 2026
- Migrate BaseOutlier and WinsorizerBase to narwhals, add polars support (#1033)
  
  solegalli
  and
  claude
  authored
  25a76f3
- Migrate Winsoriser/Winsorizer to narwhals, add polars support (#1036)
  
  solegalli
  and
  claude
  authored
  16262df
- Return narwhals frames from BaseNumericalTransformer's fit and transform checks (#1060)
  
  solegalli
  and
  claude
  authored
  74958e0
- Migrate ArbitraryOutlierCapper to narwhals, add polars support (#1034)
  
  solegalli
  and
  claude
  authored
  a54622a
- Migrate OutlierTrimmer to narwhals, add polars support (#1035)
  
  solegalli
  and
  claude
  authored
  bd6c064
- Merge remote-tracking branch 'origin/main' into merge-main-into-narwhals
  solegalli
  committed
  a957f70
- Merge pull request #1062 from feature-engine/merge-main-into-narwhals
  solegalli
  authored
  7c22dfa
- Speed up the missing-value check (#1072)
  
  solegalli
  and
  claude
  authored
  b0ec8b5
- Migrate MatchVariables to narwhals, add polars support (#1063)
  
  solegalli
  and
  claude
  authored
  c8ae828
- Migrate MatchCategories to narwhals, add polars support (#1064)
  
  solegalli
  and
  claude
  authored
  35fe69e
- Migrate TextFeatures to narwhals, add polars support (#1074)
  
  solegalli
  and
  claude
  authored
  91d01de

Commits

Commits on Aug 24, 2026

Commits on Aug 25, 2026

Commits on Aug 30, 2026

Commits on Sep 14, 2026

Commits on Sep 15, 2026

Commits on Sep 16, 2026

Commits on Sep 18, 2026

Commits on Sep 19, 2026