title: how to use pssh python script using Python ProtoBuf library?
body: <p>I am not able to figure out how Python ProtoBuf library is related to use pssh python script in this documentation  <a href="https://github.com/google/shaka-packager/tree/master/packager/tools/pssh" rel="nofollow noreferrer">https://github.com/google/shaka-packager/tree/master/packager/tools/pssh</a></p>
  
  <p>How can I build the pssh.py script without the proto file?</p>