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Sum of Digits

Beginner · Write the code · from 50 Python Practice Problems with Instant Answer Checking (Beginner to Advanced)

From the lesson: 50 Python Practice Problems with Instant Answer Checking (Beginner to Advanced)

Fifty problems, each with a code editor and real tests. Write your solution, press Check, and see exactly which cases pass. Stuck? Hints reveal one at a time, and the solution unlocks once you have checked at least once. Your code and progress are saved in this browser.

Read the lesson

Write digit_sum(n) that returns the sum of the digits of the integer n. It must work for negative numbers too (ignore the minus sign).

digit_sum(1234)  ->  10
digit_sum(-58)   ->  13
def digit_sum(n):
pass
Solution unlocks after your first Check

What Check runs

Your code runs first, then each of these lines. The output must match exactly.

RunsExpected output
digit_sum(1234)10
digit_sum(-58)13

More practice problems

All Python exercises · 50 practice problems