当我在cmd中运行Python文件时，它不显示代码打印

Question

当我在cmd中运行python文件时，它没有在cmd中显示代码打印，但是当我在空闲状态中运行相同的代码时，一切正常，并且在外壳中看到了打印内容

代码：

import socket
import select

server_socket = socket.socket()

SERVER_IP = '0.0.0.0'
PORT_NUMBER = 9056

server_socket.bind((SERVER_IP, PORT_NUMBER))
server_socket.listen(5)

print("Server is up and running" + "\n" + "The server IP is " + SERVER_IP +
      "\n" + "The port number is " + str(PORT_NUMBER))


open_client_sockets =[]
messages_to_send =[]


def send_waiting_messages(wlist):
    for message in messages_to_send:
        (client_socket, data) = message

        if client_socket in wlist:
            client_socket.send(data.encode())
            messages_to_send.remove(message)

while True:
    rlist, wlist, xlist = select.select([server_socket] + open_client_sockets,open_client_sockets, [])
    for current_socket in rlist:
        if current_socket is server_socket:
            (new_socket, address) = server_socket.accept()
            open_client_sockets.append(new_socket)
        else:
            data = current_socket.recv(1024).decode()
            if data == "":
                open_client_sockets.remove(current_socket)
                print("Connection with client closed.")
            else:
                messages_to_send.append((current_socket, "Hello, " + data))

    send_waiting_messages(wlist)