socket.gaierror: [Errno -2] Name or Service not known

[mpd]

http_Server = socketserver.TCPServer((" ", 4444), HTTPHandler)

That empty string is your problem. You need to give the server a hostname or interface for it to "listen" for incoming connections. If you are doing all of this local to your computer, you can specify "localhost" or "127.0.0.1", if you want to access it from another computer, you can specify "0.0.0.0" which means accept connections on any network interface.