[Python-ideas] Re: Adding a "once" function to functools

On Sun, Apr 26, 2020 at 06:43:06PM +0200, Alex Hall wrote:

It's not clear to me why people prefer an extra function which would be exactly equivalent to lru_cache in the expected use case (i.e. decorating a function without arguments). It seems like a good way to cause confusion, especially for beginners. Based on the Zen, there should be one obvious way to do it.

Indeed, and if you want to guarantee that a function is executed exactly *once*, then a decorator called *once* is that Obvious Way. How many beginners do you know who even know what a LRU cache is? -- Steven