Even if it were possible, I would stick with @memoize def fib: pass fib = memoize(function ...) has unnecessary nesting, and @memoize is clean

Even if it were possible, I would stick with @memoize def fib: pass fib = memoize(function ...) has unnecessary nesting, and @memoize is cleaner IMO. I am curious - do you find @memoize confusing? Personally for me and anyone I have talked to, @memoize is vanilla - the confusing part is the decorator itself, especially one that takes arguments; that coupled with the fact that classes(which override __call__) and functions are both used as decorators.