try:
    from year import Year
except ImportError:
    raise SystemExit('Could not find year.py. Does it exist?')

import unittest

class YearTest(unittest.TestCase):
    def test_leap_year(self):
        self.assertTrue(Year(1996).is_leap_year())

    def test_any_old_year(self):
        self.assertFalse(Year(1997).is_leap_year())

    def test_exceptional_century(self):
        self.assertTrue(Year(2000).is_leap_year())

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

@@ -398,17 +398,17 @@
 e(Year(2
-0
+4
 00).is_l

Fix leap year tests