I am developing a server using python but the server can communicate with only one client at a time . Even if the server establish connection with more than one clients, it can't make conversation with all clients at the same time. 
One client should wait until the started conversation end, which may last for several minutes. This problem would create Tremendous delay up on the client which hasn't started conversation. 
So, how could I let my python server to communicate with more than one clients at the same time ? 
Thank you in advance
You may use Tornado. It is asynchronic multithreading web-server framework.
how can I make a server communicate with more than 1 client at the same time?