test_os.py 文件源码

def test_set_get_priority(self):

        base = os.getpriority(os.PRIO_PROCESS, os.getpid())
        os.setpriority(os.PRIO_PROCESS, os.getpid(), base + 1)
        try:
            new_prio = os.getpriority(os.PRIO_PROCESS, os.getpid())
            if base >= 19 and new_prio <= 19:
                raise unittest.SkipTest(
      "unable to reliably test setpriority at current nice level of %s" % base)
            else:
                self.assertEqual(new_prio, base + 1)
        finally:
            try:
                os.setpriority(os.PRIO_PROCESS, os.getpid(), base)
            except OSError as err:
                if err.errno != errno.EACCES:
                    raise