python爬取豆瓣读书top250

python爬取豆瓣读书top250，并保存在本地。
分别用requests+re、requests+xpath 完成
1.requests + re

import requests
import re

def getHtmltext(url):
    try:
        html = requests.get(url)
        html.raise_for_status()
        html.encoding = html.apparent_encoding
        return html.text
    except:
        return None

def parserhtml(html):
    List1 = re.findall(r'; title="(.*?)".*?<p class="pl">(.*?)</p>',html,re.S)
    return List1
def savexlsx(List):