Function to calculate the verification digit of a RUT (for Chile)

RUT_Calculator.py

def calculate_dv(rut):
    rut_str = str(rut)

    if len(rut_str) not in [7, 8]:
        raise ValueError("The RUT must have 7 or 8 digits.")

    rut_str = rut_str.zfill(8)[-8:]

    rut_rev = list(map(int, list(rut_str[::-1])))

    multiplier = [2, 3, 4, 5, 6, 7, 2, 3, 4]

    dv = (11 - sum(x * y for x, y in zip(rut_rev, multiplier)) % 11) % 11

    return "K" if dv == 10 else str(dv)

# Example of use
rut_example = 23024485
dv_calculated = calculate_dv(rut_example)

# Print result
print("The verification digit of the RUT", rut_example, "is:", dv_calculated)