Method Unittest - performed sequentially with Example

the unittest Import 
from the webdriver Selenium Import 

class the F4 (of unittest.TestCase): 

    @classmethod 
    DEF setUpClass (CLS): 
        cls.driver = webdriver.Chrome () 
        cls.driver.maximize_window () 
        cls.driver.implicitly_wait (30) 
        cls.driver. GET ( "http://www.baidu.com") 

    @classmethod 
    DEF tearDownClass (CLS): 
        cls.driver.quit () 

        "" "Baidu Home link test" "" 

    DEF test_baidu_del (Self): 
        "" "Home link testing: verify the news link "" " 
        self.driver.find_element_by_link_text (" News ") .click () 
        self.driver.back () 

# first execution _add, then execute _del 

    DEF test_baidu_add (Self):
        "" "Home Link Test: Verify link map." ""
        self.driver.find_element_by_link_text("地图").click()
        self.driver.back()

if __name__ == '__main__':
    unittest.main(verbosity=2)