title: how to download videos from a site using python
body: <p>recently I`m watching some videos of CS 162 from <a href="http://www.infocobuild.com/education/audio-video-courses/computer-science/CS162-Spring2014-Berkeley/lecture-02.html" rel="nofollow noreferrer"> this site </a>
  and when I tried to find url of video I found out there is no url in inspect elements tab.
  but I found the url of video in network tab. you can see this tab near inspect elements of site in opera.
  I tried to get data of this tab using "requests" but It didn't turn out to be a clear url I was looking for.</p>
  
  <p>Is there a way to gain data of network tab using python?<br>
  check <a href="https://bugthinking.com/how-to-save-a-video-from-jwplayer-website/" rel="nofollow noreferrer">this site</a> if you can't find network tab.</p>
  
  <p>thanks;</p>