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#!/usr/bin/env python
# -*- coding: utf-8 -*-
def sum_of_digits(number: int) -> int:
"""Return the sum of digits of a given number."""
total = 0
while number > 0:
total += number % 10
number //= 10
return total
def print_niven_numbers() -> None:
"""Print all the niven numbers from 0 to 50 inclusive."""
for num in range(51):
digit_sum = sum_of_digits(num)
if digit_sum != 0 and num % digit_sum == 0:
print(num)
if __name__ == '__main__':
print_niven_numbers()
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