问题
I would like to get the estimated results number from google for a keyword. Im using Python3.3 and try to accomplish this task with BeautifulSoup and urllib.request. This is my simple code so far
def numResults():
try:
page_google = '''http://www.google.de/#output=search&sclient=psy-ab&q=pokerbonus&oq=pokerbonus&gs_l=hp.3..0i10l2j0i10i30l2.16503.18949.0.20819.10.9.0.1.1.0.413.2110.2-6j1j1.8.0....0...1c.1.19.psy-ab.FEBvxrgi0KU&pbx=1&bav=on.2,or.r_qf.&bvm=bv.48705608,d.Yms&'''
req_google = Request(page_google)
req_google.add_header('User Agent', 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120427 Firefox/15.0a1')
html_google = urlopen(req_google).read()
soup = BeautifulSoup(html_google)
scounttext = soup.find('div', id='resultStats')
except URLError as e:
print(e)
return scounttext
My problem is that my soup variable is somehow encoded and that i cant get any information out of it. So i get back a None because soup.find doesnt work.
What am i doing wrong and how can i extract the wanted resultstats? Many thanks!
回答1:
If you haven't solved this problem yet, it looks like the reason BeautifulSoup is failing to find anything is that the resultStats never appear in the soup - your Request(page_google) is only returning JavaScript, not any search results that the JavaScript is dynamically loading in. You can verify this by adding a
print(soup)
command to your code and you will see that the resultStats div doesn't appear.
The following code:
import sys
from urllib2 import Request, urlopen
import urllib
from bs4 import BeautifulSoup
query = 'pokerbonus'
url = "http://www.google.de/search?q=%s" % urllib.quote_plus(query)
req_google = Request(url)
req_google.add_header('User-Agent', 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3')
html_google = urlopen(req_google).read()
soup = BeautifulSoup(html_google)
scounttext = soup.find('div', id='resultStats')
print(scounttext)
Will print
<div class="sd" id="resultStats">Ungefähr 1.060.000 Ergebnisse</div>
Lastly, using a tool like Selenium Webdriver might be a better way to go about solving this, as Google does not allow bots to scrape search results.
来源：https://stackoverflow.com/questions/17496760/scrape-google-resultstats-with-python