Python uses socket to implement non blocking mode to implement Asynchronous communication and event driven programming

Environmental construction: 1. Ensure that Python is installed and that the latest version can be downloaded and installed on the official website. 2. Install the required third-party class library asyncio. Run the following command from the command line to install: pip install asyncio Dependent class libraries: 1. asyncio: Python Standard library, which provides infrastructure supporting Asynchronous I/O and event driven programming. 2. Socket: Python Standard library, which provides socket programming interface for network communication. The complete sample code is as follows: python import asyncio import socket #The address and port number of the connection HOST = 'localhost' PORT = 8080 async def handle_client(reader, writer): #Receive data from clients data = await reader.read(1024) message = data.decode() #Processing client data addr = writer.get_extra_info('peername') print("Received {} from {}".format(message, addr)) #Send response to client response = "Hello, client!" writer.write(response.encode()) await writer.drain() #Close Connection writer.close() async def run_server(): server = await asyncio.start_server( handle_client, HOST, PORT) addr = server.sockets[0].getsockname() print('Server started on {}:{}'.format(*addr)) async with server: await server.serve_forever() #Start Server asyncio.run(run_server()) Summary: By using asyncio to build non blocking Asynchronous communication, we can achieve efficient network programming. In the above example, we used the 'start' provided by asyncio_ The 'server' function is used to create a server and then communicate using a Socket. After the client sends data, the server asynchronously processes the client request and returns a response. This non blocking asynchronous programming approach can improve the performance and efficiency of programs, enabling them to handle multiple requests simultaneously, improving the concurrency and scalability of the system. In actual development, more complex Asynchronous communication and event driven programming can be realized by using asyncio and socket as required.