'Test exception path in exception_validate, expecting windows line endings.'

def test_exception_path2(self):

    self.mktmp("import    sys\nprint('A')\nprint('B')\nprint('C',    file=sys.stderr)\nprint('D',    file=sys.stderr)\n")
    out = 'A\r\nB'
    tt.ipexec_validate(self.fname, expected_out=out, expected_err='C\r\nD')
