Migrate MeanEncoder.fit() to narwhals, add polars support - #1027

Merged

solegalli merged 7 commits into

narwhals-migrationfrom

narwhals-mean-encoder

Sep 15, 2026

Commits on Sep 15, 2026

Migrate MeanEncoder.fit() to narwhals, add polars support

solegalli
and
claude
committed
0d3f3c0
Adapt MeanEncoder to narwhals-returning check_X

solegalli
and
claude
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d791f18
Use shared backend test fixtures and helpers in MeanEncoder tests

solegalli
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claude
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dcb2530
Use frame_to_dict in MeanEncoder tests

solegalli
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claude
committed
4cf8926
refactor mean encoder
solegalli
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c38610b
Simplify MeanEncoder narwhals fit and drop init asserts from fit tests

solegalli
and
claude
committed
ce4764b
refactor mean enc tests
solegalli
committed
9a88b0c