# coding:utf-8
from lxml import etree
import requests
for i in range(10):
    url='https://music.douban.com/top250?start={}'.format(i*25)
    html = requests.get(url).text    #这里一般先打印一下html内容，看看是否有内容再继续。
    # print html
    s = etree.HTML(html)
    titles = s.xpath('//*[@id="content"]/div/div[1]/div/table/tr/td[2]/div/a/text()')
    hrefs=s.xpath('//*[@id="content"]/div/div[1]/div/table/tr/td[2]/div/a/@href')
    authors=s.xpath('//*[@id="content"]/div/div[1]/div/table/tr/td[2]/div/p/text()')
    imgs=s.xpath('//*[@id="content"]/div/div[1]/div/table/tr/td[1]/a/img/@src')
    for j in range(25):
        print titles[j],hrefs[j],authors[j],imgs[j]