python脚本，下载html内容而不是流式视频

Question

我对python（和编程的东西）很陌生，所以我试图练习不同类型的练习。其中之一是使用脚本（python3）下载流式视频。问题是，我不下载视频，但网页的HTML内容...任何人都可以帮助我了解什么是错的？

这里是我的代码：

import Mail 
from urllib.request import Request, urlopen 
import urllib 
import time 
import requests 

mail = Mail.Mail() 

def download_file(url): 
    local_filename = url.split('/')[-1] 
    # NOTE the stream=True parameter 
    r = requests.get(url, stream=True) 
    with open(local_filename, 'wb') as f: 
     for chunk in r.iter_content(chunk_size=1024): 
      if chunk: # filter out keep-alive new chunks 
       f.write(chunk) 
       # f.flush() commented by recommendation from J.F.Sebastian 
    return local_filename 


if __name__ == '__main__': 

    url = 'https://youtu.be/xKsEKgAF7kE' 


filename = download_file(url) 
print(filename, " has been downloaded.") 

不注重豆腐渣样的邮件的事情，这是我再使用，或无用的进口创造了一个类：我第一次在第一次看到不同的，我没使用请求库，我的代码是不同的，但结果是相同的（这段代码来自其他stackoverflow主题）。

非常感谢您的帮助！ :)

Answer 1

**最好使用pytube模块并查看其内部。所以我可能会帮助你**

from pytube import YouTube 
from pprint import pprint 

yt = YouTube("http://www.youtube.com/watch?v=Ik-RsDGPI5Y") 


print(yt.get_videos()) 


# The filename is automatically generated based on the video title. You 
# can override this by manually setting the filename. 

# view the auto generated filename: 
print(yt.filename) 

# Pulp Fiction - Dancing Scene [HD] 

# set the filename: 
yt.set_filename('Enything') 

# You can also filter the criteria by filetype. 
print(yt.filter('flv')) 

print(yt.filter(resolution='480p')) 

video = yt.get('mp4', '720p') 

# NOTE: get() can only be used if and only if one object matches your  criteria. 
# for example: 

print(yt.videos) 

#[<Video: MPEG-4 Visual (.3gp) - 144p>, 
# <Video: MPEG-4 Visual (.3gp) - 240p>, 
# <Video: Sorenson H.263 (.flv) - 240p>, 
# <Video: H.264 (.flv) - 360p>, 
# <Video: H.264 (.flv) - 480p>, 
# <Video: H.264 (.mp4) - 360p>, 
# <Video: H.264 (.mp4) - 720p>, 
# <Video: VP8 (.webm) - 360p>, 
# <Video: VP8 (.webm) - 480p>] 

# Since we have two H.264 (.mp4) available to us... now if we try to call get() 
# on mp4... 

video = yt.get('mp4') 
# MultipleObjectsReturned: 2 videos met criteria. 

# In this case, we'll need to specify both the codec (mp4) and resolution 
# (either 360p or 720p). 

# Okay, let's download it! (a destination directory is required) 
video.download('/tmp/')