Reshaping decorated functions with wrapt (opens in new tab)

Most decorators leave the function's outward shape alone. The same parameters go in, the same return type comes out, and inspect.signature and inspect.iscoroutinefunction give the same answers they would have given for the undecorated function. Sometimes you want a decorator that actively changes that shape. Adds or removes a parameter. Changes the return annotation. Turns a sync function into something that should be awaited, or runs an async function to completion so it can be called from s...