#server.py

from gevent import monkey;monkey.patch_all()

import socket

import gevent

sk = socket.socket()

sk.bind(('127.0.0.1',8080))

sk.listen()

def talk(conn):

    conn.send(b'hello')

    print(conn.recv(1024).decode('utf-8'))

    conn.close()

while True:

    conn,addr = sk.accept()

    gevent.spawn(talk,conn)

sk.close()

#client.py

import socket

sk =socket.socket()

sk.connect(('127.0.0.1',8080))

print(sk.recv(1024).decode('utf-8'))

msg = input('>>>'.encode('utf-8'))

sk.send(msg)

sk.close()