Python Chat Server

#!/usr/bin/python           # This is server.py file

import socket               # Import socket module
from thread import *
import select

connection_list = []             # List to hold all connected clients
address_list = []                # List to hold all client addresses
RECV_BUFFER = 4096
PORT = 1337
HOST = "0.0.0.0"


server_socket = socket.socket()         # Create a socket object
server_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
server_socket.bind((HOST, PORT))        # Bind to the port
server_socket.listen(10)                 # Now wait for client connection.
server_socket.setblocking(False)

connection_list.append(server_socket)
address_list.append(HOST)

print("Started chat server on port " + str(PORT))


while True:
    try:
       read_sockets, write_sockets, error_sockets = select.select(connection_list,[],connection_list)

       for current_socket in read_sockets:

          if current_socket == server_socket:
             client_socket, client_address = server_socket.accept()
             connection_list.append(client_socket)
             address_list.append(client_address)
             print( "Client (%s, %s) connected" % client_address)
             client_socket.send("Welcome to the server!\n")
             client_socket.send("There are 0 users online\n")

          else:
             try:
                data = current_socket.recv(RECV_BUFFER)
                current_socket_addr = address_list[connection_list.index(current_socket)]
                if data:
                    for current_send_socket in connection_list:
                       if current_send_socket != server_socket:
                           current_send_socket.send("<"+current_socket_addr[0]+"> "+data)
                           continue

                    print("<"+current_socket_addr[0]+"> "+data[:-1])
                else:
                    print ("Client (%s, %s) has disconnected" % current_socket_addr)
                    current_socket.close()
                    connection_list.remove(current_socket)


             except:
                current_socket_addr = address_list[connection_list.index(current_socket)]
                print ("Client (%s, %s) is offline" % current_socket_addr)
                current_socket.close()
                connection_list.remove(current_socket)
                continue


    except (KeyboardInterrupt, SystemExit):
        print("Shutting down server...")
        print("Disconnecting all clients...")
        for current_client in connection_list:
            if current_client != server_socket:
                current_client.send("[Server] Server shutting down... \n")
                current_client.close()

        print("Closing server socket...")
        server_socket.shutdown(socket.SHUT_RDWR)
        server_socket.close()
        print("Server shut down successfully")
        raise


server_socket.close()