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newb question about @property

Chris Angelico wrote:
> On Tue, Oct 3, 2017 at 6:23 AM, Larry Hudson via Python-list
> <python-list at python.org> wrote:
>> On 10/01/2017 03:52 PM, Bill wrote:
>>> Steve D'Aprano wrote:
>>>> The definitive explanation of descriptors is here:
>>>> https://docs.python.org/3/howto/descriptor.html
>>> Thank you!  It is next on my list.   Then I'll try that Circle problem you
>>> mentioned as an exercise last night!  I don't expect run into any
>>> difficulties.  : )
>> Except perhaps for your sense of time...  "I'll try" implies the future,
>> "last night" is the past.    :-)   :-)
>> (Couldn't resist...)
> Yes, but "you mentioned" implies the past. I think you have an
> operator precedence issue. Kappa
> ChrisA

Reading the "definitive explanation of descriptors" took me longer than 
expected..  I am as overly optimistic as any programming person..   ;)

Can you inspire me with a good decorator problem (standard homework 
exercise-level will be fine)?  Otherwise  I will go create one which 
will prints a row of asterisks before and after the call to the original 
function (which I think I should do). But maybe you have something more 
interesting? Or maybe you can refer me to a good source of Python 
problems, so I can bug you less?