Whatever you do, usually as long as the data frame fits in memory it should be pretty fast. Depending on functions you’re using applymap on splices of columns might be faster but code readability will suffer.
How big is your dataset? If it’s huge or your need are complex you’ll get way more performance by switching from Pandas to Polars dataframes rather than trying to optimize Pandas operations.
TIL Ada Spark is a whole different thing from Apache Spark and I can’t even complain about Ada one because it predates Apache one by 15 years.
Long history would imply continuity, not “so long ago that nobody in the comment section is old enough to have lived through it”.
How do you stand image scaling on 3DS? It’s either poststamp sized or horribly mangled by non-integer scaling on a very low res display. It’s the reason I keep DSi along NN3DS.