python-unittest中setUpClass与setUp执行顺序

import unittest
class TestGo(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        print("setUPClass")
    def setUp(self):
        print("setUP")
    def testOne(self):
        print("testone111")
    def testTwo(self):
        print("testtwo222")
    def tearDown(self):
        print("tearDown")
    @classmethod
    def tearDownClass(cls):
        print("tearDownClass")
if __name__==‘__main__‘:
    unittest.main()

out：
setUPClass
setUP
testone111
tearDown
setUP
testtwo222
tearDown
tearDownClass