/ scikit-learn Public
FIX Enforce strict column name order/count in ColumnTransformer #18256
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See #14223, #14237, #14251 and #14544
What does this implement/fix? Explain your changes.
This PR enforces strict column name order and count in ColumnTransformer and cleans up the intermediary codes that were used while the previous behaviour was being deprecated.
Basically, these changes are TODOs marked for v0.24.
Any other comments?