只打开一次浏览器，生成html测试报告<小紧张中......>

from selenium import webdriver
import unittest
import time
 
class Blog(unittest.TestCase):
    """登录博客园"""
 
    # 添加@classmethod装饰器，只打开浏览器一次
    @classmethod
    def setUpClass(cls):
        """初始化"""
        cls.browser = webdriver.Chrome()
        cls.url = 'https://passport.cnblogs.com/user/signin'
        cls.browser.get(cls.url)
        cls.browser.implicitly_wait(30)
        cls.browser.maximize_window()
 
    def login(self, username, password):
        """登录帐号密码参数化"""
        self.browser.find_element_by_id('input1').send_keys(username)
        self.browser.find_element_by_id('input2').send_keys(password)
        self.browser.find_element_by_id('signin').click()
        time.sleep(3)
 
    def is_login_sucess(self):
        """判断是否获取登录后账户名称"""
        time.sleep(2)
        try:
            text = self.browser.find_element_by_id('lnk_current_user').text
            print(text)
            return True
        except:
            return  False
 
    def back_out(self):
        # 退出返回登录页面
        time.sleep(2)
        self.browser.find_element_by_xpath('//*[@id="header_user_right"]/a[5]').click()
        time.sleep(2)
        # alert方法去掉退出弹框
        s = self.browser.switch_to_alert()
        s.accept()
        time.sleep(2)
        self.browser.find_element_by_xpath('//*[@id="header_user_left"]/a[1]').click()
        time.sleep(2)
 
    def clear_box(self):
        """清空输入框"""
        self.browser.find_element_by_id('input1').clear()
        self.browser.find_element_by_id('input2').clear()
        time.sleep(1)
 
    def test_01(self):
        """调用login函数登录"""
        self.login('uesrname', 'password')
        result = self.is_login_sucess()
        self.assertTrue(result)
 
    def test_02(self):
        """错误的示范"""
        self.back_out()
        self.clear_box()
        self.login('1', '2')
        result = self.is_login_sucess()
        self.assertTrue(result, msg='失败了呀，没有获取登录后的账户名称呢!')
 
    @classmethod
    def tearDownClass(cls):
        cls.browser.quit()
 
if __name__ == '__main__':
    """生成html报告"""
    import HTMLTestRunner
    # now = time.s
    now = time.strftime('%Y-%m-%d %H-%M-%S')
    report_title = '博客园登录自动化测试'
    # report_path = r'D:\PythonProject\com\report.html'
    report_path = 'D:\\PythonProject\\com\\'+ now + 'report.html'
    explain = '博客园登录测试报告'
 
    test_suite = unittest.TestSuite()
    test_suite.addTest(Blog('test_01'))
    test_suite.addTest(Blog('test_02'))
 
    with open(report_path, 'wb') as fp:
        runner = HTMLTestRunner.HTMLTestRunner(title=report_title, stream=fp, description=explain)
        runner.run(test_suite)
        fp.close()