Python Network Programming is the practise of using the Python programming language to build programmes that run over networks. To build applications that can communicate with other computers over a network, this entails the implementation of several network protocols and socket programming.
Client-server communication, network protocols including HTTP, FTP, and SMTP, and many other topics are covered in Python Network Programming. It makes it possible for programmers to create apps that can transfer data through computer networks, like the internet.
In addition to the socket module, which offers the essential functionality for working with sockets, Python includes a robust collection of modules for network programming. The endpoints of a communication channel used for data exchange between processes running on various systems are called sockets.
You may develop a wide range of network-based apps with Python Network Programming, including web servers, file transfer applications, chat applications, email clients, and more.
Server side code:
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import socket # Create a socket to listen for incoming connections server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server_socket.bind(("", 12345)) server_socket.listen(5) # Continuously accept incoming connections while True: client_socket, client_address = server_socket.accept() # Receive data from the client data = client_socket.recv(1024).decode() # Split the data into make and model make, model = data.split(":") # Print the received car information print(f"Received car: {make} {model}") # Close the client socket client_socket.close() |
Client side code:
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import socket # Connect to the server client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) client_socket.connect(("localhost", 12345)) # Send data to the server client_socket.send("Toyota:Corolla".encode()) # Close the socket client_socket.close() |
This code demonstrates how to build a simple client-server system using sockets. The server-side code listens for incoming connections, receives data from clients, and prints the received data. The client-side code connects to the server and sends data.
The data consists of a make and model separated by a colon, and represents information about a car. In this example, the client sends the car “Toyota:Corolla” to the server, which prints the received data.