python3 selenium 如何处理异常情况

 1 # _._ coding=utf-8 _._
 2 """
 3 :author: 花花测试
 4 :time: 2017.05.08
 5 :content: 处理元素定位的异常情况
 6 """
 7 
 8 from selenium import webdriver
 9 from datetime import datetime
10 from selenium.common import exceptions
11 import random
12 import time
13 
14 """
15 http://www.kgc.cn/personal_management/17087.shtml:这个课程不是直播课
16 http://www.kgc.cn/java/25349.shtml：这个课程是直播课
17 
18 """
19 
20 driver = webdriver.Chrome()
21 driver.get(‘http://www.kgc.cn/personal_management/17087.shtml‘)
22 
23 try:
24     end_time = driver.find_element_by_xpath(
25         ‘/html/body/div[2]/div/div/div[2]/div[2]/div[1]/div[2]/div[3]/div/span[2]‘).text
26     now_time = datetime.now().strftime(‘%Y-%m-%d %H:%M‘)
27     print(‘直播结束时间为：{0}‘.format(end_time))
28     print(‘当前时间为：{0}‘.format(now_time))
29     time.sleep(1)
30 
31     if end_time >= now_time:
32         print(‘这个课程是直播未开始或者是直播已经开始的课程‘)
33     else:
34         print(‘这个课程是直播已结束的课程‘)
35 except exceptions.NoSuchElementException:
36     print(‘您选择的这节课程不是直播课‘)
37 driver.quit()
38 print(‘测试结束‘)