MAINT - fixing a deprecationwarning#2200
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jeromedockes
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Jul 2, 2026
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the problem is that the current behavior of pl.concat(how="horizontal") is deprecated on version of polars past 1.41
how="horizontal" pads with nulls columns that don't have the same length, and from 1.42 that behavior needs to be enabled with "horizontal_extend"
but old versions of polars don't have "horizontal_extend"
in skrub we assume all concatenated dataframes to have the same length, so the new behavior is what we would expect anyway
this pr silences the deprecation warning so that tests can run