Question

给定网址，如何验证网址是否指向可下载视频？

鉴于这种情况，函数is_downloadable_video(url)的实现是什么：

downloadable_video_url = 'https://pixabay.com/en/videos/download/video-8579_large.mp4?attachment'
not_downloadable_url = 'http://techslides.com/demos/sample-videos/small.mp4'

is_downloadable_video(downloadable_video_url)   # Returns True
is_downloadable_video(not_downloadable_url)   # Returns False

Answer 1

这会检查有效的html：

import requests
urls = ['https://pixabay.com/en/videos/download/video-8579_large.mp4?attachment',
        'http://techslides.com/demos/sample-videos/small.mp4']

for url in urls:
    r = requests.head(url)
    print "text/html" in r.headers["content-type"]

在我看来，这会检查是否可下载：

for url in urls:
    print 'download=1' in ''.join(requests.head(url).headers.values())

将网址验证为可下载的视频 - Python

1 个答案: