add example using select/asyncore from http://etutorials.org/Programming/Python+tutorial/Part+IV+Network+and+Web+Programming/Chapter+19.+Sockets+and+Server-Side+Network+Protocol+Modules/19.3+Event-Driven+Socket+Programs/

asyncore/TcpServer.py

@@ -0,0 +1,24 @@
+import asyncore
+import socket
+
+class MainServerSocket(asyncore.dispatcher):
+    def __init__(self, port):
+        asyncore.dispatcher.__init__(self)
+        self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.bind(('',port))
+        self.listen(5)
+    def handle_accept(self):
+        newSocket, address = self.accept(  )
+        print "Connected from", address
+        SecondaryServerSocket(newSocket)
+
+class SecondaryServerSocket(asyncore.dispatcher_with_send):
+    def handle_read(self):
+        receivedData = self.recv(8192)
+        if receivedData: self.send(receivedData)
+        else: self.close(  )
+    def handle_close(self):
+        print "Disconnected from", self.getpeername(  )
+
+MainServerSocket(8881)
+asyncore.loop(  )