如何提取网页中嵌入的视频链接名称以及视频名称

Question

我正在尝试从网页中提取所有视频链接引用以及视频名称，我尝试了以下代码。

#!/usr/bin/python3
from bs4 import BeautifulSoup
import requests
import urllib
url = urllib.request.urlopen('https://www.ansible.com/resources/videos').read()
acc_link = BeautifulSoup(url, features="lxml")
for line in acc_link.find_all('a'):
    print(line.get('href'))

输出：

https://www.ansible.com/?hsLang=en-us
https://www.ansible.com/overview/it-automation?hsLang=en-us
https://www.ansible.com/overview/it-automation?hsLang=en-us
https://www.ansible.com/overview/how-ansible-works?hsLang=en-us
https://www.ansible.com/products/automation-platform?hsLang=en-us
https://www.ansible.com/use-cases?hsLang=en-us
https://www.ansible.com/use-cases/provisioning?hsLang=en-us
https://www.ansible.com/use-cases/configuration-management?hsLang=en-us
https://www.ansible.com/use-cases/application-deployment?hsLang=en-us
https://www.ansible.com/use-cases/continuous-delivery?hsLang=en-us
https://www.ansible.com/use-cases/security-automation?hsLang=en-us
https://www.ansible.com/use-cases/orchestration?hsLang=en-us
https://www.ansible.com/integrations?hsLang=en-us

HTML源代码示例：

<h4><a href="https://www.ansible.com/resources/webinars-training/ansible-network-automation-with-arista-cloudvision-and-arista?hsLang=en-us">Ansible Network Automation with Arista CloudVision and Arista Validated Designs</a></h4>

如上只是链接https://www.ansible.com/resources/videos的HTML源代码的示例，我希望链接名称为https://www.ansible.com/resources/webinars-training/ansible-network-automation-with-arista-cloudvision-and-arista和视频名称Ansible Network Automation with Arista CloudVision and Arista Validated Designs。

下面只是另一个示例，我希望 href 在 ? 和 a 值之前，即 Scale-out Clustering with Tower 3.1。

<h4><a href="https://www.ansible.com/scale-out-clustering-tower?hsLang=en-us">Scale-out Clustering with Tower 3.1</a></h4>

期望的输出：

视频名称：使用 Arista CloudVision 和 Arista 验证设计实现 Ansible 网络自动化

视频链接： https://www.ansible.com/resources/webinars-training/ansible-network-automation-with-arista-cloudvision-and-arista

感谢您的帮助。

Answer 1

如果您想要所有锚点中的 href，那么您可以使用 css 选择 'a[href]'，它只会找到具有 href 属性的锚点标签：

你确实有点调整如下，

#!/usr/bin/python3
from bs4 import BeautifulSoup
import requests
import urllib

url = urllib.request.urlopen('https://www.ansible.com/resources/videos').read()
acc_link = BeautifulSoup(url, features="lxml")

for article in acc_link.find_all('div', class_='card-body'):
        # this will grab the name of the video article
        headline1 = article.h4.a.text
        # this will get your video link
        headline2 = article.select_one('a[href]')['href'].split('?')[0]
        #headline2 = headline2.split('?')[0]
        print(headline1)
        # I have placed the condition as few of the link address do not have
        #  the site link prefix www.ansible.com.
        if 'www' in headline2:
            print(headline2)
        else:
            print('https://www.ansible.com' + headline2)
        print()

结果：

Automating Monitoring with the Sensu Go Ansible Collection
https://www.ansible.com/resources/webinars-training/automating-monitoring-with-the-sensu-go-ansible-collection

How to load balance a hybrid cloud using Red Hat Insights,  Red Hat Ansible, and Red Hat AMQ Interconnect
https://www.redhat.com/en/about/videos/road-to-open-hybrid-cloud-part-2

British Army speeds service delivery with Red Hat
https://www.redhat.com/en/about/videos/british-army-speeds-service-delivery-red-hat

Zero To 100 - Rapid deployment with Ansible Tower
https://www.ansible.com/zero-to-100

Scale-out Clustering with Tower 3.1
https://www.ansible.com/scale-out-clustering-tower

What's New In Tower 3.1
https://www.ansible.com/whats-new-tower-3-1

Amelco - Continuous Delivery with Ansible Tower
https://www.ansible.com/success-stories/amelco

Runnable - Getting Started with Ansible
https://www.ansible.com/success-stories/runnable

Fatmap - App Deployment with Ansible
https://www.ansible.com/success-stories/fatmap

Splunk and Ansible Tower
https://www.ansible.com/success-stories/splunk

Siemens - Delivering Automation to the Cloud
https://www.ansible.com/success-stories/siemens

Ansible Tower 10 min demo
https://www.ansible.com/products/tower/demo

Ansible Tower 3.1
https://www.ansible.com/tower-workflows-demo

Ansible Tower 2-min Overview
https://www.ansible.com/tower-overview

Ansible Quick Start
https://www.ansible.com/resources/videos/quick-start-video

Ansible + AWS - Serverless Deploys
https://www.ansible.com/resources/videos/ansible-aws-automate-serverless-application-deploys-with-ansible

Ansible + AWS - EC2 Provisionling
https://www.ansible.com/resources/videos/ansible-aws-automate-ec2-provisioning-with-red-hat-ansible-engine-and-red-hat-ansible-tower

Network Automation For Beginners
https://www.ansible.com/resources/videos/network-automation-with-red-hat-ansible-engine-for-beginners

Agnostic Network Automation Examples with Ansible and Juniper NRE Labs
https://www.ansible.com/blog/agnostic-network-automation-examples-with-ansible-and-juniper-nre-labs

 How useful is Ansible in a cloud-native Kubernetes environment
https://www.ansible.com/blog/how-useful-is-ansible-in-a-cloud-native-kubernetes-environment

我希望这会有所帮助。