Python_Web_scraping HTML表

Question

我是Python初学者开发人员，但仍处于学习阶段。 更具体地说，是使用request和bs4进行抓取。 尝试抓取以下链接时：' http ://directorybtr.az.gov/listings/FirmSearchResults.asp?Zip%20Like%20% 22850%25%22 '

我使用以下代码：

import requests

from bs4 import BeautifulSoup
url ="http://directorybtr.az.gov/listings/FirmSearchResults.asp?Zip%20Like%20%22850%25%22"
res = requests.get(url)

soup = BeautifulSoup(res.text, 'html.parser')
res.close()
results = soup.find('table')

尽管在Chrome中检查源页面时存在该表，但结果中没有任何表。 有什么解决办法或解释吗？

谢谢

Answer 1

表数据在框架内，您需要先走

import requests
from lxml import html
from bs4 import BeautifulSoup
BASE_URL = "http://directorybtr.az.gov/listings/" 
URL = BASE_URL + "FirmSearchResults.asp?Zip%20Like%20%22850%25%22"
#u need session because the frame use the search results data, u cant directly go to Firms.asp
session = requests.session()
response = session.get(URL)
soup = BeautifulSoup(response.text, 'lxml')
#find the first frame 
frame = soup.find("frame")
#go to the frame link ( Firms.asp )
response = session.get(BASE_URL + frame.attrs['src'])
soup = BeautifulSoup(response.text, 'lxml')
table = soup.find("table")
print table
response.close()