BaseSeleniumTestCase测试用例继承类

import loggingfrom unittest import TestCasefrom selenium import webdriverimport settingslogger = logging.getLogger(__name__)class BaseSeleniumTestCase(TestCase):    def get_web_driver(self):        driver = webdriver.PhantomJS()        driver.set_window_size(1400, 1000)        return driver    def setUp(self):        self.selenium = self.get_web_driver()    def tearDown(self):        self.selenium.quit()        pass