Python 浏览新闻网站时出现索引错误

我一直在尝试从web上搜索新闻文章的标题，但在执行以下代码时遇到了“索引错误”。我只在最后一行代码中遇到了一个问题

import requests
from bs4 import BeautifulSoup
URL= 'https://www.ndtv.com/coronavirus?pfrom=home-mainnavgation'
r1 = requests.get(URL)
coverpage = r1.content
soup1 = BeautifulSoup(coverpage, 'html5lib')
coverpage_news = soup1.find_all('h3', class_='item-title')
coverpage_news[4].get_text()

这就是错误：

IndexError                                Traceback (most recent call last)
<ipython-input-10-f7f1f6fab81c> in <module>
      6 soup1 = BeautifulSoup(coverpage, 'html5lib')
      7 coverpage_news = soup1.find_all('h3', class_='item-title')
----> 8 coverpage_news[4].get_text()

IndexError: list index out of range

索引器错误回溯（最近一次调用）
在里面
6 soup1=BeautifulSoup（封面“html5lib”）
7封面新闻=soup1.find_all（'h3'，class='item-title'）
---->8封面新闻[4]。获取文本（）
索引器：列表索引超出范围

尝试更改：

coverpage_news = soup1.find_all('h3', class_='item-title')

到

使用

soup1.select（）

搜索与CSS选择器匹配的嵌套元素：

coverpage_news = soup1.select("h3 a.item-title")

---

这将找到一个

h3

元素后代的

a

元素，该元素带有

class=“item title”

。

稍微更改@Barmar的有用答案以显示所有标题：

coverpage_news = soup1.select("h3 a.item-title")
for link in coverpage_news:
  print(link.text)

输出：

US Covid Infections Cross 9 Million, Record 1-Day Spike Of 94,000 Cases
Johnson & Johnson Plans To Test COVID-19 Vaccine On Youngsters Soon
Global Stock Markets Decline As Coronavirus Infection Rate Weighs
Cristiano Ronaldo Recovers From Coronavirus
Reliance's July-September Profit Falls 15% As Covid Slams Oil Business
"Likely To Know By December If We'll Have Covid Vaccine": Top US Expert
With No Local Case In A Record 200 Days, This Country Is World's Envy
Delhi Blames Pollution For Covid Spike At High-Level Health Ministry Meet
Delhi Covid Cases Above 5,000 For 3rd Straight Day, Spike In ICU Patients
2 Million Indians Returned From Abroad Under Vande Bharat Mission: Centre
Existing Lockdown Restrictions Extended In Maharashtra Till November 30
Can TB Vaccine Protect Elderly From Covid?
Is The Covid-19 Situation Worsening In Delhi?
What's The Truth Behind India's Falling Covid Numbers?
"Slight Laxity Can Lead To Spike": AIIMS Director As India Sees Drop In Covid Cases

---

这意味着页面上没有5个元素满足您搜索的条件。我在该页面上没有看到任何

。我看到

，这就是您要查找的内容吗？我也看到了很多

，还有

，它们包含

，所以你到底想提取什么？这段代码只给出了一个结果，但我想抓取网页的整个标题。它应该找到所有匹配项

select_one（）

只返回第一个匹配项。

US Covid Infections Cross 9 Million, Record 1-Day Spike Of 94,000 Cases
Johnson & Johnson Plans To Test COVID-19 Vaccine On Youngsters Soon
Global Stock Markets Decline As Coronavirus Infection Rate Weighs
Cristiano Ronaldo Recovers From Coronavirus
Reliance's July-September Profit Falls 15% As Covid Slams Oil Business
"Likely To Know By December If We'll Have Covid Vaccine": Top US Expert
With No Local Case In A Record 200 Days, This Country Is World's Envy
Delhi Blames Pollution For Covid Spike At High-Level Health Ministry Meet
Delhi Covid Cases Above 5,000 For 3rd Straight Day, Spike In ICU Patients
2 Million Indians Returned From Abroad Under Vande Bharat Mission: Centre
Existing Lockdown Restrictions Extended In Maharashtra Till November 30
Can TB Vaccine Protect Elderly From Covid?
Is The Covid-19 Situation Worsening In Delhi?
What's The Truth Behind India's Falling Covid Numbers?
"Slight Laxity Can Lead To Spike": AIIMS Director As India Sees Drop In Covid Cases