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make_column_transformer has different order of arguments than ColumnTransformer

See original GitHub issue

I’m not sure if we discussed this or did this on purpose, but I find this very confusing. ColumnTransformer has (name, transformer, columns) and make_columntransformer has (columns, transformer). I guess it’s too late to change this? Though we did say it’s experimental and subject to change.

Issue Analytics

State:
Created 5 years ago
Comments:28 (28 by maintainers)

Top GitHub Comments

1reaction

jorisvandenbosschecommented, Nov 20, 2018

For historical clarity: based on discussion in the PR https://github.com/scikit-learn/scikit-learn/pull/12396, we decided in the end to do it the other way around as decided on above (so transformer, columns). The reason is mainly due to technical and user-facing complexity to properly deprecate the current order in master for ColumnTransfomer, while it will be much easier to limit the change to the factory function make_column_transformer, but see the linked PR for more details.

1reaction

jnothmancommented, Oct 17, 2018

One small argument in favour of 2 is that “ColumnTransformer” is a mnemonic for (column, transformer).

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