Totals Both Ways — easy Data with Python problem | Incognition

Totals Both Ways

10 pts · 10 coins

Data with PythonEasy

Totals Both Ways

A bakery records how many of each item it sells. The numbers come as a grid: one row per day and one column per item.

The owner asks two questions: how many things were sold each day, and how many of each item were sold over all the days?

Task: write totals(sales) and return a dict:

"per_day" — the total sold on each day, as a plain list in day order,
"per_item" — the total sold of each item, as a plain list in item order.

The grid always has at least one day and one item.

Examples

sales = [[12, 30, 8], [15, 25, 10]]

returns {'per_day': [50, 50], 'per_item': [27, 55, 18]}

sales = [[5, 7], [3, 9], [6, 4], [8, 2]]

returns {'per_day': [12, 12, 10, 10], 'per_item': [22, 22]}

Hints

solution.py

1import numpy as np
2
3def totals(sales):
4    # your code here
5    pass
6