iicey

class FizzBuzz:

    @property
    def number(self):
        return self._number

    @number.setter
    def number(self, value):
        self._number = value
        if self.is_num_or_str(3) and self.is_num_or_str(5):
            self._number = 'fizz_buzz'
        elif self.is_num_or_str(3):
            self._number = 'fizz'
        elif self.is_num_or_str(5):
            self._number = 'buzz'
        elif value < 0 or value > 100:
            raise ValueError('number must between 0 ~ 100!')

    @number.deleter
    def number(self):
        del self._number

    def is_num_or_str(self, dividend):
        return self.number % dividend == 0 or str(self.number).find(str(dividend)) >= 0


if __name__ == '__main__':
    for i in range(1, 101):
        fizz_buzz = FizzBuzz()
        fizz_buzz.number = i
        print(fizz_buzz.number)

import unittest

from fizzbuzz import FizzBuzz


class TestFizzBuzz(unittest.TestCase):

    def test_by_3_or_5(self):
        fz1 = FizzBuzz()
        fz2 = FizzBuzz()
        fz1.number = 1
        fz2.number = 2
        self.assertEqual(fz1.number, 1)
        self.assertEqual(fz2.number, 2)

    def test_by_3(self):
        fz1 = FizzBuzz()
        fz2 = FizzBuzz()
        fz3 = FizzBuzz()
        fz1.number = 3
        fz2.number = 13
        fz3.number = 33
        self.assertEqual(fz1.number, 'fizz')
        self.assertEqual(fz2.number, 'fizz')
        self.assertEqual(fz3.number, 'fizz')

    def test_by_5(self):
        fz1 = FizzBuzz()
        fz2 = FizzBuzz()
        fz1.number = 5
        fz2.number = 25
        self.assertEqual(fz1.number, 'buzz')
        self.assertEqual(fz2.number, 'buzz')

    def test_by_3_and_5(self):
        fz1 = FizzBuzz()
        fz2 = FizzBuzz()
        fz3 = FizzBuzz()
        fz4 = FizzBuzz()
        fz1.number = 15
        fz2.number = 35
        fz3.number = 51
        fz4.number = 53
        self.assertEqual(fz1.number, 'fizz_buzz')
        self.assertEqual(fz2.number, 'fizz_buzz')
        self.assertEqual(fz3.number, 'fizz_buzz')
        self.assertEqual(fz3.number, 'fizz_buzz')
        self.assertEqual(fz4.number, 'fizz_buzz')


if __name__ == '__main__':
    unittest.main()