py2_7.py

# server.py

from header_utils import format_message
import socket
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind((socket.gethostname(), 5555))
server_socket.listen(10)
print (f'Listeing on {socket.gethostname()}:{5555}')

while True:
    client_socket, client_address = server_socket.accept()
    print(f'Established connection to {client_address[0]}:{client_address[1]}')
    client_socket.send(bytes(format_message('Hello there, how are you?'), 'utf-8'))