Python what does def main(req: func.HttpRequest) -> func.HttpResponse: mean? [duplicate]

Question

I'm playing with Azure Functions and the main method is

def main(req: func.HttpRequest) -> func.HttpResponse:

Can someone please break down every part of this and explain what it means. Specifically what does req: func.HttpRequest mean, is it forcing some data type for the parameter? And what does -> func.HttpResponse mean, is it forcing a return type?

I've never seen this syntax in Python before.

Answer 1

It defines a function named main, which takes one parameter named req that is of type func.HttpRequest, and returns a value of type func.HttpResponse.