This tells pandas to build a pivot table, using the "region" column as the index, and the small, large, and "extra large" ...
REDUCE allows you to iterate through your data, building your result step-by-step, in the same way a loop operates in a programming language. Instead of scattering your intermediate calculations ...
Rena Cohen has your number. By Sam Corbin Randolph Ross takes the stage with a whirled-up Sunday puzzle. By Caitlin Lovinger Kyle Dolan goes for the gold with a challenging Saturday puzzle. By Sam ...