The decorator syntax is just syntactic sugar, the next two purpose definitions are semantically equivalent: Suppose you employ pip3 to set up a package foo, which has a bar module. So this means you could execute python3 -m foo.bar from any Listing. Alternatively, you have a Listing structure such as https://denver-website-developmen42851.bloggactif.com/37769501/backend-web-development-company-options