单用户连接：

socket_client.pyimport socketclient = socket.socket(socket.AF_INET, socket.SOCK_STREAM)client.connect(('127.0.0.1', 8000))while True:    re_data = input()    client.send(re_data.encode('utf8'))    data = client.recv(1024)    print(data.decode('utf8'))

socket_server.pyimport socketserver = socket.socket(socket.AF_INET, socket.SOCK_STREAM)server.bind(('0.0.0.0', 8000))server.listen()sock,addr = server.accept()while True:    data = sock.recv(1024)    print(data.decode('utf8'))    re_data = input()    sock.send(re_data.encode('utf8'))

多用户连接(利用多线程）

socket_server.pyimport socket, threadingserver = socket.socket(socket.AF_INET, socket.SOCK_STREAM)server.bind(('0.0.0.0', 8000))server.listen()def handle_sock(sock, addr):    data = sock.recv(1024)    print(data.decode('utf8'))    re_data = input()    sock.send(re_data.encode('utf8'))while True:    sock,addr = server.accept()    current_thread = threading.Thread(target=handle_sock, args=(sock,addr))    current_thread.start()