Python crawler from getting started to giving up 10 | Python crawler practice - Download bilibilibili online list video

SunriseCai 2020-11-13 11:28:37
python crawler getting started giving


This blog is only for my spare time to record articles , Publish to , Only for users to read , If there is any infringement , Please let me know , I'll delete it .
This article is pure and wild , There is no reference to other people's articles or plagiarism . Insist on originality !!

Preface

Hello . Here is Python Reptiles from getting started to giving up series of articles . I am a SunriseCai.


This article mainly introduces using the crawler program to download Bili Bili current online list All the videos of .

1. Article ideas

notice Bili Bili current online list , As shown in the following figures :

  • home page ( First level page )
     Insert picture description here
  • Every time you refresh a page, the online list is different
     Insert picture description here

The task of this article is to download all the videos of this page , What are you waiting for , Let's get started !!!


2. request + analysis Webpage

Let's see what to do next .

  1. obtain Bili Bili current online list Links to all videos .
  2. Download the corresponding video according to the obtained video link .
  3. End .

2.1 Get links to all videos

  • Open developer tools ,
  • You can see that the source code contains Bili Bili current online list Link to video .
     Insert picture description here
     Insert picture description here
  • If you are using Google browser , Can use xpath helper Plug in to parse web page .
  • You can see the following ,xpath It's resolved to Bili Bili current online list Of 20 Video Links .
  • xpath Expressions have been mentioned in the previous article .
     Insert picture description here

Get video link code :

import re
import requests
from lxml import etree
def get_online_videoUrl():
"""
Request the first page of the online list
:return:
"""
url = 'https://www.bilibili.com/video/online.html'
headers = {

'user-agent': 'Mozilla/5.0'
}
html = requests.get(url, headers=headers).text
return html
def parse_html(html):
"""
Parse web pages
:param html:
:return:
"""
text = etree.HTML(html)
video_links = text.xpath('//*[@id="app"]/div/div[2]/div/a/@href')
video_title = text.xpath('//*[@id="app"]/div/div[2]/div/a/@title')
video_links = ['https:' + link for link in video_links]
for video_data in zip(video_links, video_title):
print(video_data)
html = get_online_videoUrl()
parse_html(html)

The result of running the code :

  • You can see that you have successfully obtained the download link .
     Insert picture description here

Then the next step is to use the link to download the video .


2.2 Download Video


3. Code section

Some questions :

  • Some videos need big members to watch .
     Insert picture description here

  • Some of the links extracted from the video links are flv, How it is extracted and m4s The extraction path of is different . And then came up with

  • The download part uses a single thread , Because of the simple , Simple is the end .

Code self access : https://github.com/SunriseCai/spiderCode


Functions to be improved :

  • The code is not perfect , Basically, you can use , It depends on the situation later to decide whether it is perfect or not .
  • Automatically refresh the current online list of bilibilibili ( Such as 5 Minutes at a time ), Do it yourself , Have ample food and clothing .
  • It is suggested that you copy and paste the code to execute it , If you have any questions, please solve them by yourself , It is better to believe in books than to have no books .
  • It can't be solved. We can communicate with each other .

Finally, I will summarize the content of this chapter :

  1. Introduced the use of crawler download Bili Bili current online list All video crawler ideas
  2. nothing

sunrisecai

  • Thank you for your patience in watching , Focus , Neverlost .
  • For the convenience of chicken pecking each other , Welcome to join QQ Group organization :648696280

Next article , be known as 《Python Reptiles from getting started to giving up 11 | Python Reptile battle – Use the automatic artifact Selenium Crawling for Jingdong products 》.

版权声明
本文为[SunriseCai]所创,转载请带上原文链接,感谢

  1. 利用Python爬虫获取招聘网站职位信息
  2. Using Python crawler to obtain job information of recruitment website
  3. Several highly rated Python libraries arrow, jsonpath, psutil and tenacity are recommended
  4. Python装饰器
  5. Python实现LDAP认证
  6. Python decorator
  7. Implementing LDAP authentication with Python
  8. Vscode configures Python development environment!
  9. In Python, how dare you say you can't log module? ️
  10. 我收藏的有关Python的电子书和资料
  11. python 中 lambda的一些tips
  12. python中字典的一些tips
  13. python 用生成器生成斐波那契数列
  14. python脚本转pyc踩了个坑。。。
  15. My collection of e-books and materials about Python
  16. Some tips of lambda in Python
  17. Some tips of dictionary in Python
  18. Using Python generator to generate Fibonacci sequence
  19. The conversion of Python script to PyC stepped on a pit...
  20. Python游戏开发,pygame模块,Python实现扫雷小游戏
  21. Python game development, pyGame module, python implementation of minesweeping games
  22. Python实用工具,email模块,Python实现邮件远程控制自己电脑
  23. Python utility, email module, python realizes mail remote control of its own computer
  24. 毫无头绪的自学Python,你可能连门槛都摸不到!【最佳学习路线】
  25. Python读取二进制文件代码方法解析
  26. Python字典的实现原理
  27. Without a clue, you may not even touch the threshold【 Best learning route]
  28. Parsing method of Python reading binary file code
  29. Implementation principle of Python dictionary
  30. You must know the function of pandas to parse JSON data - JSON_ normalize()
  31. Python实用案例,私人定制,Python自动化生成爱豆专属2021日历
  32. Python practical case, private customization, python automatic generation of Adu exclusive 2021 calendar
  33. 《Python实例》震惊了,用Python这么简单实现了聊天系统的脏话,广告检测
  34. "Python instance" was shocked and realized the dirty words and advertisement detection of the chat system in Python
  35. Convolutional neural network processing sequence for Python deep learning
  36. Python data structure and algorithm (1) -- enum type enum
  37. 超全大厂算法岗百问百答(推荐系统/机器学习/深度学习/C++/Spark/python)
  38. 【Python进阶】你真的明白NumPy中的ndarray吗?
  39. All questions and answers for algorithm posts of super large factories (recommended system / machine learning / deep learning / C + + / spark / Python)
  40. [advanced Python] do you really understand ndarray in numpy?
  41. 【Python进阶】Python进阶专栏栏主自述:不忘初心,砥砺前行
  42. [advanced Python] Python advanced column main readme: never forget the original intention and forge ahead
  43. python垃圾回收和缓存管理
  44. java调用Python程序
  45. java调用Python程序
  46. Python常用函数有哪些?Python基础入门课程
  47. Python garbage collection and cache management
  48. Java calling Python program
  49. Java calling Python program
  50. What functions are commonly used in Python? Introduction to Python Basics
  51. Python basic knowledge
  52. Anaconda5.2 安装 Python 库(MySQLdb)的方法
  53. Python实现对脑电数据情绪分析
  54. Anaconda 5.2 method of installing Python Library (mysqldb)
  55. Python implements emotion analysis of EEG data
  56. Master some advanced usage of Python in 30 seconds, which makes others envy it
  57. python爬取百度图片并对图片做一系列处理
  58. Python crawls Baidu pictures and does a series of processing on them
  59. python链接mysql数据库
  60. Python link MySQL database