Python is almost anything you don't know, how to play a little video with Python

What is a reptile?

Is the process of crawling web data

How do crawlers crawl Web data?

Three main features of the Web page:

• The Web page has its own unique URL.
• Web pages are HTML to describe page information.
• Web pages use the HTTP/HTTPS protocol to transfer HTML data.

Crawler Design Ideas:

• Get video ID
• Stitching full URL
• Get video playback Address
• Download video

Module using requests

Install "Pip Install requests"

Seven main methods of the requests library

Find a single video playback address

Get Web page source code

Get play Address

Download video

Full Code

1 #-*-coding:utf-8-*-2 ImportRequests3  fromlxmlImportetree4 ImportRe5  fromUrllib.requestImportUrlretrieve6 #Get video ID7 #Stitching full URL8 #get video playback address9 #Download VideoTen #Python Learning Exchange Group: 125240963, the group to share the daily dry, including the latest Python enterprise case study materials and 0 basic introductory tutorials, welcome to the group of small partners to learn exchange One  A defDownload (URL): -     #url = ' Http://www.pearvideo.com/category_9 ' -     #Get Source code the     #html = requests.get (URL) -HTML =requests.get (URL). Text -     #to process a text file into an explanatory object -     #If I use the regular, I can not and can +HTML =etree. HTML (HTML) -video_id = Html.xpath ('//div[@class = "VERVIDEO-BD"]/a/@href') +Video_url = [] AStarurl ='http://www.pearvideo.com' at     #Full Stitching URL -      forIdinchvideo_id: -Newurl = Starurl +'/'+ID - video_url.append (Newurl) -     #get video playback address -      forPlayurlinchVideo_url: in         #get page source code -HTML =Requests.get (playurl). Text to         #print (Playurl) +req ='srcurl= "(. *?)"' -         #video Real play address thePurl =Re.findall (req,html) *         #print (purl) $         #Get video namePanax Notoginsengreq ='
' -PName =Re.findall (req,html) the         Print("Downloading:%s"%pname) +  AUrlretrieve (Purl[0],'./video/%s.mp4'%pname[0]) the #Download () +  - defDownloadmore (): $n = 12 $      whileTrue: -         ifn > 48: -             return theURL ="http://www.pearvideo.com/category_loading.jsp?reqType=5&categoryId=9&star=%d"%N -N+=12Wuyi Download (URL) theDownloadmore ()

Python is almost anything you don't know, how to play a little video with Python