............E... ====================================================================== ERROR: testRepr (tester.ProblemTests) ---------------------------------------------------------------------- Traceback (most recent call last): File ".../test.py", line 25, in testRepr self.assertEqual(i, eval(repr(i))) File "", line 1, in NameError: name 'inf' is not defined ---------------------------------------------------------------------- Ran 16 tests in 0.005s FAILED (errors=1)