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Language/Type: Python loops %

Write a function named digit_sum that accepts an integer as a parameter and returns the sum of the digits of that number. For example, the call of digit_sum(29107) returns 2+9+1+0+7 or 19. For negative numbers, return the same value that would result if the number were positive. For example, digit_sum(-456) returns 4+5+6 or 15.

Function: Write a Python function as described, not a complete program.

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