> or hardcode a 'self' arg in their wrapper and thus don't work on global functions. I'm fine with simplifying it for an article but for production code this is

> or hardcode a 'self' arg in their wrapper and thus don't work on global functions. I'm fine with simplifying it for an article but for production code this is a pet peeve of mine :p To be fair, this is such an easy class of mistake to make that the standard library does it. @functools.lru_cache is bugged for instance methods.