import unittest from test import test_support class ListCompTestCase(unittest.TestCase): #http://bugs.jython.org/issue1205 def test_long_listcomp(self): #for a long list comp, we compute the Hardy-Ramanujan number #http://en.wikipedia.org/wiki/1729_(number) res = [(x1**3+x2**3,(x1,x2),(y1,y2)) for x1 in range(20) for x2 in range(20) if x1 < x2 # x-Paare for y1 in range(20) for y2 in range(20) if y1 < y2 # y-Paare if x1**3+x2**3 == y1**3+y2**3 # gleiche Summe if (x1,x2) < (y1,y2) ] self.assertEquals(1729, min(res)[0]) self.assertEquals(len(res), 2) def test_main(): test_support.run_unittest(ListCompTestCase) if __name__ == '__main__': test_main()