Is this pythonic?

[Steve D'Aprano]

On Wed, 23 Nov 2016 11:27 pm, Frank Millman wrote:

> It is a bit like quantum theory. I have no way of telling whether the
> computation has been carried out without looking at it, but the act of
> looking at it triggers the computation. I can tell, of course, by looking
> at the underlying attribute, but not by using the public methods.

Then give it a public method (or better, a property) to tell.


@property
def needs_computation(self):
    return not hasattr(self, '_cached_value')




-- 
Steve
“Cheer up,” they said, “things could be worse.” So I cheered up, and sure
enough, things got worse.