Pandas 3.1 filter: Selecting rows with a pd.col condition

Pandas 3.1 introduces a filter method that applies a row condition via pd.col, letting users replace .loc[pd.col('passenger_count') > 1, 'trip_distance'] with .filter(cond=pd.col('passenger_count') > 1)['trip_distance'], according to a November 8, 2026 post on the release. The post notes the new filter-based form is "much slower" than the equivalent .loc expression. The change gives Pandas users an alternative row-selection syntax but at a performance cost versus .loc.