pychat/client.py

import socket
import threading
from random import randint

HOST = 'localhost'
PORT = 12345

nickname = input("username:")
if nickname == "":
    nickname = ["tux","gnu","wilber","xue","puffy"][randint(0,4)]
    nickname += str(randint(1000,9999))
    print(f"dein username wurde zu {nickname} gesetzt.")

run = True

def receive_message(sock):
    while run:
        try:
            msg = sock.recv(1024).decode('utf-8')
            if not msg:
                break
            print(f"\r{msg}\n", end='', flush=True)
        except:
            break

def start_client():
    global run
    client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    client.connect((HOST, PORT))

    threading.Thread(target=receive_message, args=(client,), daemon=True).start()

    try:
        client.sendall(nickname.encode('utf-8'))
        while run:
            msg = input(">>")
            if msg.lower() == "exit":
                break
            client.sendall(msg.encode('utf-8'))
    except KeyboardInterrupt:
        pass
    finally:
        run = False
        print("BEENDEN")
        client.sendall("exit".encode('utf-8'))
        client.close()

if __name__ == '__main__':
    start_client()