Python:打开路由器后面的监听端口(upnp?)

I've developed an application that is essentially just a little ftp server with the ability to specify which directory you wish to share on startup. I'm using ftplib for the server because it's sick easy. The only issue I'm having is that if you are behind a router you have to manually forward the ports on your router and I'm finding that it's a little too complicated for my users (aka co-workers/clients).I've developed an application that is essential