def test_equal_2(self):
self.assertEqual(distinct([1, 2]), [1, 2])
def test_equal_5(self):
self.assertEqual(distinct([1, 2, 2, 3, 3, 4, 4, 5, 6, 7, 7, 7]),
[1, 2, 3, 4, 5, 6, 7])
def test_equal_1(self):
self.assertEqual(distinct([1]), [1])
def test_equal_4(self):
self.assertEqual(distinct([1, 1, 1, 2, 3, 4, 5]), [1, 2, 3, 4, 5])
