[Python-ideas] caching properties

[Ben Finney]

Benjamin Peterson <benjamin at python.org>
writes:

> I think it would be nice to add a "cache" argument to the property()
> constructor. When "cache" was True, property would only ask the getter
> function once for the result. This would simplify properties that
> require expensive operations to compute.

I would prefer this as a decorator (not affecting the function
signature), and applicable to any function (not just a property).

This is the “memoize” pattern, implemented as a decorator in
<URL:http://code.activestate.com/recipes/496879/>.

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Ben Finney