def testEnsureNoSets(self):
    """SystemConfiguration/preferences.plist must not have Sets key."""
    self.assertEqual(self.sys_prefs in 'Sets', False)
dataset/ETHPy150Open MacSysadmin/pymacadmin/utilities/diskimage_unittesting/tests/network_plist_test.py/TestNetworkAirbookCompliant.testEnsureNoSets/swapped operands of `in`