[fusiongyro]

If your only standard for utility is applicability to Python there's no point discussing monads or anything else that comes up in conversations about languages besides Python. Maybe the reason you haven't seen a cogent explanation of monads using only Python is the same as the reason you haven't seen a cogent explanation of how to use the clutch in an automatic car, or how to desalinate fresh water, or how to make lemonade with nothing but a jug and ice water. Maybe the problem isn't the explanation or the one producing it.