Скачать или смотреть Python how to organize pubsub messages

Download this code from https://codegive.com
Sure, I'd be happy to help you with that! PubSub (publish-subscribe) is a messaging pattern where senders (publishers) of messages don't program the messages to be sent directly to specific receivers (subscribers). Instead, the sender categorizes the messages into classes without knowledge of which subscribers, if any, there may be. Similarly, subscribers express interest in one or more classes and only receive messages that are of interest, without knowledge of which publishers, if any, there are.
In Python, you can implement PubSub using various libraries, and one popular choice is the pubsub library. Let's create a simple tutorial on how to organize PubSub messages using the pubsub library with a code example.
Before you start, you need to install the pypubsub library. You can do this using pip:
Let's create a simple example with a publisher and two subscribers. The publisher sends messages, and subscribers react to messages of interest.
In this example, we have a Publisher class that sends messages with a specific type. We also have two subscribers, SubscriberA and SubscriberB, each interested in a specific message type. When the publisher sends messages, only subscribers interested in the message type will receive and handle the messages.
Save the above code into three separate files (publisher.py, subscribers.py, and main.py) in the same directory. Then, run main.py:
You should see output similar to:
This demonstrates a simple PubSub implementation in Python using the pypubsub library. You can expand on this example by adding more message types, subscribers, or customizing the message handling logic.
ChatGPT