使用socket模块，实现服务器和客户端进行数据交互（聊天室功能）

使用Python的socket模块可以创建一个基本的服务器-客户端架构来进行数据交互，例如实现一个简单的文本聊天室。这里我们将展示一个基础的实现步骤：

**服务器端（server.py）**:

import socket

def start_server():
    server_address = ('localhost', 12345)
    buffer_size = 1024

    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
        s.bind(server_address)
        s.listen(1)
        conn, addr = s.accept()
        print(f"Connected by {addr[0]}:{addr[1]}")

        while True:
            data = conn.recv(buffer_size)
            if not data:
                break
            print(f"Received: {data.decode('utf-8')}")
            conn.sendall(data)

if __name__ == "__main__":
    start_server()

**客户端（client.py）**:

import socket

def start_client(server_ip, server_port):
    client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    client.connect((server_ip, server_port))

    while True:
        message = input("Enter your message: ")
        client.send(message.encode('utf-8'))
        received_data = client.recv(1024).decode('utf-8')
        print(f"You sent: {message}\nServer replied: {received_data}")

if __name__ == "__main__":
    server_ip = "localhost"
    server_port = 12345  # 可以根据实际情况修改
    start_client(server_ip, server_port)

要在终端上运行，先启动服务器，然后在另一个终端启动客户端，它们之间就可以通过指定的服务器地址和端口进行通信。