Python uses sockets to achieve multithreaded concurrent connections and data communication

Environmental construction and preparation work: Firstly, ensure that you have installed the Python interpreter. You can access the Python official website（ https://www.python.org/downloads/ ）Download and install the appropriate version of Python from. 2. You need to master basic Python programming knowledge, including functions, classes, and multithreaded programming. 3. You need to understand the basic concepts and principles of Socket programming, including TCP/IP protocol and Socket API. Dependent class libraries: Python provides a built-in socket library for socket programming, without the need to install additional class libraries. Complete sample code: The following is a simple sample code for implementing multithreaded concurrent connections and data communication using Python sockets: python import socket import threading def handle_client(client_socket): #Handling client connections request_data = client_socket.recv(1024) print("Received data:", request_data.decode()) #Responding to client requests response_data = b"Hello, client!" client_socket.sendall(response_data) #Close client connection client_socket.close() def main(): #Create a TCP Server object and bind the address and port server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server_socket.bind(('localhost', 8888)) #Start listening for connections server_socket.listen(5) print("Server is listening on port 8888...") while True: #Accept client connections client_socket, client_address = server_socket.accept() print("Accepted connection from:", client_address) #Create threads to handle client connections client_thread = threading.Thread(target=handle_client, args=(client_socket,)) client_thread.start() if __name__ == '__main__': main() After running this code, you can use Telnet or other tools to connect to the 8888 port of localhost and submit the request. The server will accept the client's connection, process the request and return a response, and then close the connection. Summary: This article introduces the method of using socket libraries in Python to achieve multithreaded concurrent connections and data communication. By creating a TCP Server object, binding addresses and ports, listening for connections, and then using multithreading to process client connections, we can achieve a simple concurrent server. This sample code is just a basic example, and you can extend and modify it according to your own needs.