REST Web services with Python

I have to develop an application with these specifications, so I'm asking your advice:

1. It runs and waits requests from the web.
2. When a request of type A arrives, it asynchronously launches a Python script. This Python script (already existing) processes some data and writes the results in a table.
3. When a request of type B arrives, the application responds with the status and eventually the result of the elaboration of the asynchronous script.

I thought to do this with Python, providing a sort of REST service. Is it a good idea according to you? At the moment, which is the best Python tool to do this program? Thank you very much

Claudio