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This article introduces the knowledge of "how to download headline video by Python crawler". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

I. demand analysis

Grab the headline short video

Train of thought:

Analyze the source code of the web page, find and parse the video resource url (view the source code, search mp4)

Initiate a request for the url and return binary data

Save binary data to video format

Second, code implementation

# encoding: utf-8import sysreload (sys) sys.setdefaultencoding ('utf-8') import requestsimport reimport timetime1=time.time () main_url =' http://video.eastday.com/a/170612170956054127565.html'resp = requests.get (main_url) # there is no such line, and the printed result is garbled resp.encoding = 'utf-8'html = resp.textlink = re.findall (r'var mp4 = "(. *?)" ', html) [0] link =' http:'+linkdest_resp = requests.get (link) # Video is a binary data stream Content is the way to get binary data data = dest_resp.content# path and file name path = u'C:/ Zhao Liying. Mp4'f = open (path, 'wb') f.write (data) f.close () time2 = time.time () print u'ok, download completed!' print u 'takes a total of time:' + str (time2-time1) +'s

"D:\ Program Files\ Python27\ python.exe" D:/PycharmProjects/learn2017/testwechat.py

Ok, download complete!

Total time: 3.20499992371s

Process finished with exit code 0

If you download successfully, you can play ~

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