TCP/IP Python para Qt

[Raulh]

Hola. Estoy desarrolndo un sistema con Qt, donde tengo q comunicar dos PC con TCP/IP. No me funciona.
Pues bien estoy 'independizando' Qt para logar primero la Comunicacion.
Los dos PC ping ..an correctamente. con 192.168.29.21 y 192.168.29.69

Tome un programa de ejemplo de Digital Ocean Server y Client.
Estos son:
Server

import socket

def server_program():
# get the hostname
host = socket.gethostname()
port = 5000 # initiate port no above 1024

server_socket = socket.socket()  # get instance
# look closely. The bind() function takes tuple as argument
server_socket.bind((host, port))  # bind host address and port together

# configure how many client the server can listen simultaneously
server_socket.listen(2)
conn, address = server_socket.accept()  # accept new connection
print("Connection from: " + str(address))
while True:
    # receive data stream. it won't accept data packet greater than 1024 bytes
    data = conn.recv(1024).decode()
    if not data:
        # if data is not received break
        break
    print("from connected user: " + str(data))
    data = input(' -> ')
    conn.send(data.encode())  # send data to the client

conn.close()  # close the connection

if name == 'main':
server_program()

Client:

import socket

def client_program():
host = socket.gethostname() # as both code is running on same pc
port = 5000 # socket server port number

client_socket = socket.socket()  # instantiate
client_socket.connect((host, port))  # connect to the server

message = input(" -> ")  # take input

while message.lower().strip() != 'bye':
    client_socket.send(message.encode())  # send message
    data = client_socket.recv(1024).decode()  # receive response

    print('Received from server: ' + data)  # show in terminal

    message = input(" -> ")  # again take input

client_socket.close()  # close the connection

if name == 'main':
client_program()

Donde puede esta Mi error?

GRACIAS.