python利用socket模块，写一个最最简单的tcp通信

先说下我的参考资料哈：

https://www.cnblogs.com/liugp/p/10964981.html

https://blog.csdn.net/tonyrain123/article/details/81393129

正文开始哈：

服务器端代码：

# 再来简单的测试，这个是服务器端
import socket
import sys

BUF_SIZE = 1024
ip_port = (r"127.0.0.1", 11552)

my_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # 先拿到套接字,指定个ipv4以及流式数据包
my_socket.bind(ip_port)  # 绑定
my_socket.listen(2)

# 循环等待客户端连接
while True:
    print("waiting for client..")
    conn, address = my_socket.accept()
    print("connect from .." + str(address))

    # 循环接受
    while True:
        ret = conn.recv(BUF_SIZE)
        print("server receive data:" + str(ret))

        if "END" in str(ret):
            print("clent's gonna be offline.")
            conn.send(bytes("BYE", encoding="utf-8"))
            my_socket.close()
            sys.exit()
        else:
            conn.send(bytes("server copy", encoding="utf-8"))



客户端代码：

# 这个是客户端
import socket

BUF_SIZE = 1024
ip_port = (r"127.0.0.1", 11552)

my_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
my_socket.connect(ip_port)

while True:
    data = input(">>>")

    my_socket.send(bytes(data, encoding="utf-8"))
    recieve_data = my_socket.recv(BUF_SIZE)
    print("client receive data = " + str(recieve_data))
    if "BYE" in str(recieve_data):
        print("server disconnect!")
        break

我怎么运行的哈：
一个利用windows的cmd，直接输入命令：python server.py运行服务器
一个利用pycharm直接运行client.py