import socket

host = ''
port = 2000

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.bind((host, port))
    s.listen()
    conn, addr = s.accept()
    with conn:
        print('Connected by', addr)
        while True:
            data = conn.recv(1024)
            if data == b'exit':
                break

            print('Received data: ', data)
            conn.send(data + b' from server')