17.4 Reshape and EDA

By Ravindra Bagale Last updated: 30 September 2026

Exercise G. Melt a city×month GMV wide table to long; find the max city-month.

Hint G

melt(id_vars="city", var_name="month", value_name="gmv") then long.loc[long["gmv"].idxmax()].

Exercise H. Crosstab city vs status with margins. Write one sentence finding.

Hint H

pd.crosstab(df["city"], df["status"], margins=True).