用 Beautiful Soup 抓取网站：尝试查找具有特定 id 的 div 元素返回无

【问题标题】：Scraping a site with Beautiful Soup: trying to find a div element with specific id returns None用 Beautiful Soup 抓取网站：尝试查找具有特定 id 的 div 元素返回无
【发布时间】：2020-03-07 07:41:11
【问题描述】：

from bs4 import BeautifulSoup
from urllib import request
import csv

# adding a correct user agent
headers = {
    'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36'}
#The url to be scraped
company_page = 'https://www.goodreads.com/list/show/6.Best_Books_of_the_20th_Century?'

#opening the page
page_request = request.Request(company_page, headers=headers)
page = request.urlopen(page_request)

#parse the html using beautiful soup
html_content = BeautifulSoup(page, 'html.parser')

#Parsing some of the title elements
title = html_content.find('div',id='shell')
print(title)

【问题讨论】：

id="shell"引用了哪些信息？
如果您的问题得到解决，请将答案标记为已接受，以便其他人可以看到您的问题已得到解答。

标签： python web web-scraping beautifulsoup

【解决方案1】：

试试这个来检索所有书名：

from bs4 import BeautifulSoup
import requests
import csv

headers = {
    'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36'}
company_page = 'http://www.goodreads.com/list/show/6.Best_Books_of_the_20th_Century?'

page = requests.get(company_page, headers=headers)
soup = BeautifulSoup(page.content, 'html.parser')

titles = soup.find_all('a', class_="bookTitle")
for title in titles:
    print(title.text)

输出：

To Kill a Mockingbird
1984
Harry Potter and the Sorcerer's Stone (Harry Potter, #1)
The Great Gatsby
Animal Farm
The Hobbit, or There and Back Again
The Diary of a Young Girl
The Little Prince
Fahrenheit 451
The Catcher in the Rye
The Lion, the Witch and the Wardrobe (Chronicles of Narnia, #1)
The Grapes of Wrath
One Hundred Years of Solitude
...

细节：请注意，我已将 urllib 更改为 requests。

【讨论】：