如何使用 BeautifulSoup 在 Python 中解析谷歌搜索结果

Question

I am trying to parse the first page of google search results. Specifically, the Title and the small Summary that is provided. Here is what I have so far:

from urllib.request import urlretrieve
import urllib.parse
from urllib.parse import urlencode, urlparse, parse_qs
import webbrowser
from bs4 import BeautifulSoup
import requests

address = 'https://google.com/#q='
# Default Google search address start
file = open( "OCR.txt", "rt" )
# Open text document that contains the question
word = file.read()
file.close()

myList = [item for item in word.split('\n')]
newString = ' '.join(myList)
# The question is on multiple lines so this joins them together with proper spacing

print(newString)

qstr = urllib.parse.quote_plus(newString)
# Encode the string

newWord = address + qstr
# Combine the base and the encoded query

print(newWord)

source = requests.get(newWord)

soup = BeautifulSoup(source.text, 'lxml')

The part I am stuck on now is going down the HTML path to parse the specific data that I want. Everything I have tried so far has just thrown an error saying that it has no attribute or it just gives back "[]".

I am new to Python and BeautifulSoup so I am not sure the syntax of how to get to where I want. I have found that these are the individual search results in the page:

https://ibb.co/jfRakR

Any help on what to add to parse the Title and Summary of each search result would be MASSIVELY appreciated.

Thank you!

Answer 1

Your url doesn't work for me. But with https://google.com/search?q= I get results.

import urllib
from bs4 import BeautifulSoup
import requests
import webbrowser

text = 'hello world'
text = urllib.parse.quote_plus(text)

url = 'https://google.com/search?q=' + text

response = requests.get(url)

#with open('output.html', 'wb') as f:
#    f.write(response.content)
#webbrowser.open('output.html')

soup = BeautifulSoup(response.text, 'lxml')
for g in soup.find_all(class_='g'):
    print(g.text)
    print('-----')

Read Beautiful Soup Documentation

Answer 2

1. Default Google search address start - it's a bit incorrect. It doesn't contain # symbol. Instead, it should have ? and /search pathname .

So this ---> https://google.com/#q=
Should be this ---> https://www.google.com/search?q=cake

2. You need user-agent to make it work because default python user-agent is "python-requests" and sites could identify it and block the script. Check Robots.txt for more. That could be the reason why you're getting an empty result. Here you can find user-agents list to fake user visit.

3. You can use Google Organic Results API from SerpApi ( see at the end ).

Code:

from bs4 import BeautifulSoup
import requests
import json

headers = {
    'User-agent':
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.19582"
}

html = requests.get('https://www.google.com/search?q=java&oq=java',
                    headers=headers).text

soup = BeautifulSoup(html, 'lxml')

summary = []

for container in soup.findAll('div', class_='tF2Cxc'):
  heading = container.find('h3', class_='LC20lb DKV0Md').text
  article_summary = container.find('span', class_='aCOpRe').text

  summary.append({
      'Heading': heading,
      'Article Summary': article_summary,
  })

print(json.dumps(summary, indent=2, ensure_ascii=False))

Output JSON:

[
  {
    "Heading": "Java | Oracle",
    "Article Summary": "Java+You, Download Today! Java Download. » What is Java? » Need Help? » Uninstall. About Java. Go Java Java Training Java + Greenfoot Oracle Code One Oracle Academy for ..."
  },
  {
    "Heading": "Oracle Java Technologies | Oracle",
    "Article Summary": "Java Is the Language of Possibilities. Java is powering the innovation behind our digital world. Harness this potential with Java resources for student coders, ..."
  },
  {
    "Heading": "Java Software | Oracle",
    "Article Summary": "includes GraalVM Enterprise at no additional cost. Download Java now · Get support. Products. Oracle Java SE Subscription · Oracle JDK · Oracle OpenJDK · Oracle Java SE Platform ..."
  },
  {
    "Heading": "Java (programming language) - Wikipedia",
    "Article Summary": "Java is a class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose ..."
  },
  {
    "Heading": "Java - Wikipedia",
    "Article Summary": "Java (Indonesian: Jawa, Indonesian pronunciation: [ˈdʒawa]; Javanese: ꦗꦮ; Sundanese: ᮏᮝ) is one of the islands of the Greater Sunda Islands in Indonesia, ..."
  },
  {
    "Heading": "Google LLC v. Oracle America, Inc. - Supreme Court",
    "Article Summary": "2 days ago — the Java programming language to work with its new Android plat- form, Google copied roughly 11,500 lines of code from the Java SE pro-."
  },
  {
    "Heading": "OpenJDK - Java.net",
    "Article Summary": "ZGC. Tools. Mercurial · Git · jtreg harness. Related. java.sun.com · Java Community Process · JDK GA/EA Builds · Oracle logo. © 2021 Oracle Corporation and/or its affiliates. Terms of ..."
  }
]

Using SerpApi :

import os
from serpapi import GoogleSearch

params = {
    "engine": "google",
    "q": "java",
    "api_key": os.getenv("API_KEY"),
}

search = GoogleSearch(params)
results = search.get_dict()

for result in results["organic_results"]:
   print(f"Title: {result['title']}\nSummary: {result['snippet']}\n")

Output:

Title: Java | Oracle
Summary: Java Download. » What is Java? » Need Help? » Uninstall. About Java. Go Java Java Training Java + Greenfoot Oracle Code One Oracle Academy for ...

Title: Oracle Java Technologies | Oracle
Summary: Java Is the Language of Possibilities. Java is powering the innovation behind our digital world. Harness this potential with Java resources for student coders, ...

Title: Java SE - Downloads | Oracle Technology Network | Oracle
Summary: Java SE downloads including: Java Development Kit (JDK), Server Java Runtime Environment (Server JRE), and Java Runtime Environment (JRE).

Title: Java (programming language) - Wikipedia
Summary: Java is a class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose ...

Title: Java - Wikipedia
Summary: Java (Indonesian: Jawa, Indonesian pronunciation: [ˈdʒawa]; Javanese: ꦗꦮ; Sundanese: ᮏᮝ) is one of the islands of the Greater Sunda Islands in Indonesia, ...

Title: OpenJDK - Java.net
Summary: What is this? The place to collaborate on an open-source implementation of the Java Platform, Standard Edition, and related projects. (Learn more.).

Title: Java Resources for Students, Hobbyists and More | go.Java ...
Summary: Java Powers Our Digital World. Java is at the heart of our digital lifestyle. It's the platform for launching careers, exploring human-to-digital interfaces, architecting ...

Make sure you created an Environment variable file with your api_key

Disclaimer, I work for SerpApi.