This labored for me on Ubuntu20.04 following Dropbox was failing to setup. Just what I used to be trying to find. ) that accepts only one argument when identified as (it will be the decorated operate) and returns another callable item. "Callable" is applied right here instead of "perform" with https://websitedesignservicesmich30305.digitollblog.com/36208305/the-basic-principles-of-backend-website-development-services