Total Stored Capacity Per Cold Room

PandasEasyJunior level~10 min

Problem

You are given two DataFrames:
- `roomstacks` with `room_label`, `produce_id`, `crate_qty` (how many crates of that produce sit in that room)
- `produce` with `produce_id`, `produce_label`, `dim_x_mm`, `dim_y_mm`, `dim_z_mm` (the crate dimensions in millimetres)

The volume of one crate is `dim_x_mm * dim_y_mm * dim_z_mm`. For each cold room, sum the total stored volume across all of its stacks (`crate_qty` times the crate volume, summed over every produce type in the room).

Return columns `cold_room` and `total_capacity`. Produce types that are not stacked in any room do not contribute.

Input data

Example rows — the live problem includes the full dataset.

roomstacks

room_label	produce_id	crate_qty
Chiller-North	1	1
Chiller-North	2	10
Chiller-North	3	5
Chiller-East	1	2
Chiller-East	2	2

produce

produce_id	produce_label	dim_x_mm	dim_y_mm	dim_z_mm
1	Crisp Apples	5	50	40
2	Cherry Tomatoes	5	5	5
3	Leaf Spinach	2	10	10
4	Frozen Peas	4	10	20

Expected output

Your answer should return 3 rows with the columns cold_room, total_capacity.

Starter code (Pandas (Python))

import pandas as pd

def total_stored_capacity_per_cold_room(roomstacks, produce) -> pd.DataFrame:
    # Your code here
    return roomstacks

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