'''
xpath提取网页的图片地址
面向过程编程
'''
#导入第三方库
import requests
from lxml import etree
#定制请求头
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) '
                         'AppleWebKit/537.36 (KHTML, like Gecko) '
                         'Chrome/64.0.3282.140 Safari/537.36 Edge/18.17763'}
#请求的目标网页
url ='https://www.yeitu.com/meinv/xinggan/'
#目标网页如果以 .text()方式输出文本，则出现乱码，故采用UTF-8方式输出网页文本
html = requests.get(url,headers = headers).content.decode('utf-8')
#xpath库解析网页，提取图片地址
e = etree.HTML(html)
#xpath解析语法
images = e.xpath('//li[@class="image-box"]/a/img/@data-echo')
#遍历输出图片地址
for image in images:
    print(image)