I kind of like this idea. I wrote this curry helper module as a proof of concept of how to implement it in Python, today, without having to add features: https://gist.github.com/Ricyteach/b290849da903135a1ed5cce9b161b8c9 Using that, you can write code like this: from typing import Any @curry_helper(suffixes=["into"]) def insert(x: Any, y: list): y.append(x) item = 1 container = [] insert(item).into(container) assert container == [item] @curry_helper(suffixes=["an_instance_of_"]) def is_(obj, cls): return isinstance(obj, cls) obj = 1 assert is_(obj).an_instance_of_(int) the API could be adjusted in all sorts of ways, but I don't think the need to apply a decorator with a list of suffixes like this is too bad. --- Ricky. "I've never met a Kentucky man who wasn't either thinking about going home or actually going home." - Happy Chandler