python - 美丽汤不会返回结果

Question

这是我的代码。它不会返回任何错误，但也不会返回任何结果。

import requests
from bs4 import BeautifulSoup

googtrends = requests.get("https://www.google.com/trends/")
soup = BeautifulSoup(googtrends.content)
links = soup.find_all("a", {"class": "trending-story ng-isolate-scope"})

print links

我还没有解决这个问题，我开始做其他的事情，但我将首先尝试使用selenium，然后尝试将selenium与phantom js或zombie js一起使用，如果仍然不起作用，我将使用 pytrends，但我刚刚检查了它们，您需要一个 gmail 帐户，我有该帐户，但我宁愿先尝试让它在没有 api 的情况下工作。

当我开始工作时，我会在这里发帖

Answer 1

是的这个页面是由 JS 动态渲染的 - 让我们尝试一下更改请求 header (它失败了，同样确保 JS 是原因!)

测试代码-

import requests
from bs4 import BeautifulSoup


my_headers={"Host": "www.google.com",
"User-Agent": "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0",
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"Accept-Language": "en-US,am;q=0.7,zh-HK;q=0.3",
"Accept-Encoding": "gzip, deflate",
"Cookie": "PREF=ID=1111111111111111:FF=0:LD=en:TM=1439993585:LM=1444815129:V=1:S=Zjbb3gK_m_n69Hqv; NID=72=F6UyD0Fr18smDLJe1NzTReJn_5pwZz-PtXM4orYW43oRk2D3vjb0Sy6Bs_Do4J_EjeOulugs_x2P1BZneufegpNxzv7rkY9BPHcfdx9vGOHtJqv2r46UuFI2f5nIZ1Cu4RcT9yS5fZ1SUhel5fHTLbyZWhX-yiPXvZCiQoW4FjZd-3Bwxq8yrpdgmPmf4ufvFNlmTd3y; OGP=-5061451:; OGPC=5061713-3:",
"Connection": "keep-alive"}


googtrends = requests.get("https://www.google.com/trends/",headers=my_headers)
my_content = googtrends.text.encode('utf-8')
soup = BeautifulSoup(my_content,'html.parser')
links = soup.find_all("a", {"class": "trending-story ng-isolate-scope"},href=True)

#Lets try if we are getting correct content from the site
# That site contains "Apple Inc.‬, ‪App Store‬‬" so let's check it in the got response

print 'Apple Inc.‬, ‪App Store‬‬' in my_content

# It prints false so website is being rendered by JS even header change does not affect

因此，请尝试在 Firefox、Chrome、PhantomJS 等中动态执行 JS 的 webdriver，例如 selenium。 更好地尝试 API。