python3 socketserver

-------------------------tcp_server.py-------------------------
import socketserver

class Myserver(socketserver.BaseRequestHandler):
    def handle(self):
        self.data = self.request.recv(1024).strip()  # self.request相当于conn
        print(self.client_address[0], self.data)
        self.request.sendall(self.data.upper())

if __name__ == '__main__':
    ip_port = ("127.0.0.1", 8001)
    socketserver.TCPServer.allow_reuse_address = True
    server = socketserver.ThreadingTCPServer(ip_port, Myserver)
    server.serve_forever()

-------------------------tcp_client.py-------------------------
# coding:utf-8
import socket

ip_port = ("127.0.0.1", 8001)
data = "hello world"

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
    sock.connect(ip_port)
    sock.sendall(data.encode("utf-8"))
    from_server_msg = sock.recv(1024).decode("utf-8")

print("Send: ", data)
print("Received: ", from_server_msg)