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Language/Type: Python recursion

Write a recursive function named sum_up_to that accepts an integer parameter n, where sum_up_to(n) returns: 1 + 1/2 + 1/3 + 1/4 + ... + 1/n .

For example, the call of sum_up_to(2) should return 1.5. You should return 0.0 if n is 0, and you should throw a ValueError if n is less than 0.

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

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