One-Line Receipt — medium Python for AI problem | Incognition

One-Line Receipt

10 pts · 10 coins

Python for AIMedium

One-Line Receipt

A shop saves a one-line summary of each basket.

prices is a dictionary of item name to price in whole pounds, like {"tea": 3, "jam": 4}.

Write save_summary(path, prices). It writes one line of text into the file called path, closes it, and returns path. The text is:

1<count> items, total <total>

<count> is how many items are in the dictionary.
<total> is all the prices added up.
If there is exactly one item, write item instead of items.
An empty basket writes 0 items, total 0.
Don't add a line break at the end.

Keep the peek helper as it is.

Examples

path = save_summary('basket.txt', {'bread': 2, 'milk': 1})

returns '2 items, total 3'

path = save_summary("sum_a.txt", {"tea": 3, "jam": 4, "eggs": 2})

returns '3 items, total 9'

path = save_summary("sum_b.txt", {"apple": 1})

returns '1 item, total 1'

Hints

solution.py

1def peek(path):
2    f = open(path, "r")
3    text = f.read()
4    f.close()
5    return text
6
7
8def save_summary(path, prices):
9    # your code here
10    pass
11