Sum Per Key

The dict sales maps each day to a list of amounts. Print one line per day in the form <day>: <sum> where the sum adds up that day's list with sum, and after the loop print Week: <grand total>, the total of all the days found by adding each day's sum into a running total. Input: none. Output: one line per day in insertion order, then the week line, all whole numbers.

Expected Output:

mon: 7↵
tue: 5↵
wed: 6↵
Week: 18↵

= newline. The output ends with a newline — print one after the last line.

Hints3 available

Topics:

Dictionaries

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