The meaning of "="
Aahz
aahz at pythoncraft.com
Tue Jul 14 18:58:06 EDT 2009
In article <m27hybyo95.fsf at cs.uu.nl>, Piet van Oostrum <piet at cs.uu.nl> wrote:
>>>>>> aahz at pythoncraft.com (Aahz) (A) wrote:
>
>>A> In article <m24otg3hkk.fsf at cs.uu.nl>, Piet van Oostrum
>>A> <piet at cs.uu.nl> wrote:
>
>>>> And to get c.x = 4 working you also need a __setitem__.
>
>>A> Nope. You do need __setitem__ so that this works:
>
>>A> c['x'] = 4
>
>Sorry, I meant such that c.x = 4 does the same as c['x'] = 4 because
>that was what the OP wanted (I think).
c.x = 4
already updates the instance dict, so there's no need to change any class
methods to support it. That is, IME it's much better to add methods to
a regular class to make it more dict-like using the built-in instance
dict rather than changing any of the attribute mechanisms. If you're
really curious, I recommend trying several approaches yourself to see
what works better. ;-)
--
Aahz (aahz at pythoncraft.com) <*> http://www.pythoncraft.com/
"If you think it's expensive to hire a professional to do the job, wait
until you hire an amateur." --Red Adair
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