Keep only the rows belonging to cities whose total cups is more than 400

pandas · from agg, transform and apply

.agg().transform().filter().apply()named aggregationas_index

Putting the kettle on…

Starting up…

Exercise 3

Keep only the rows belonging to cities whose total cups is more than 400.

your answer
stuck? the lesson behind it
agg, transform and apply
Told apart by one thing: the shape of what comes back.