# encoding:utf-8
import urllib
from urllib import request
import lxml
import lxml.etree
import re


def download(url):
    headers = {"User-Agent": "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0);"}
    request = urllib.request.Request(url, headers=headers)  # 请求，修改，模拟http.
    data = urllib.request.urlopen(request).read()  # 打开请求，抓取数据
    # data=data.decode("gbk").encode("utf-8")#乱码
    mytree = lxml.etree.HTML(data)
    print(mytree.xpath("//*[@class=\"rt\"]/text()"))
    mystr = (mytree.xpath("//*[@class=\"rt\"]/text()"))[0].strip()
    regex = re.compile("\d+", re.IGNORECASE)
    mylist = regex.findall(mystr)
    print(mystr)
    print(mylist[0])


download(
    "http://search.51job.com/list/040000,000000,0000,00,9,99,python,2,1.html?lang=c&stype=&postchannel=0000&workyear=99&cotype=99&degreefrom=99&jobterm=99&companysize=99&providesalary=99&lonlat=0%2C0&radius=-1&ord_field=0&confirmdate=9&fromType=&dibiaoid=0&address=&line=&specialarea=00&from=&welfare=")