[求助] 如何提取出网页标签内所有的属性值

代码是这样的，要如何改动啊

import requests

from pyquery import PyQuery as pq

from urllib.parse import urlencode

import re

def dizhi():

headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3573.0 Safari/537.36'}

data = {
    'q': '微信群',
    'typeall': '1',
    'suball': '1',
    'timescope': 'custom:2018 - 12 - 20 - 0: 2018 - 12 - 22 - 0',
    'Refer': 'g'
}

url = 'https://s.weibo.com/weibo/%25E5%25AE%259D%25E5%25A6%2588%25E7%25BE%25A4?' + urlencode(data)

wangzhi = requests.get(url,headers = headers)

return wangzhi.text

def jiexi(html):

doc = pq(html)

item = doc('.m3 li')

print(item('img').attr('src'))

def main():

html = dizhi()

jiexi(html)

if name == 'main':

main()

打印结果：

//ww4.sinaimg.cn/thumb150/475ee913ly1fydb7js7inj20orcmvx6q.jpg