PandasdrillTotal by group
A pandas exercise from Pandasdrill. Solve it with a Python editor in your browser running real pandas, and it is checked the moment you submit.
The task
Return the total `revenue` for each region as a Series indexed by region.
What this exercise teaches
groupby splits the rows by region, ["revenue"] picks the column to aggregate, and sum combines each group into one number. The group keys become the index, sorted A to Z.
A hint if you get stuck
groupby(key)[column] picks what to aggregate, then .sum() adds it up per group.
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