How to correctly configure RabbitMQ and Python script on the server to save data to the database?

Question

Python

There is a python script on the server that will have to receive data from the web service and write it to the database. It was advised to do this using RabbitMQ. I know that RabbitMQ can be like a cannonball, but in my case it is acceptable.
I'm trying to figure out how this will all work. And all this should very desirable work without failures, reliably.
The python script itself will receive data from the web service
The same python script will write this data to RabbitMQ
And should there be another python script that will get this data from RabbitMQ and write it to the database?
All right? Why shouldn't the python script write the incoming data directly to the database?