[Python-ideas] Dict-like object with property access

Ethan Furman ethan at stoneleaf.us
Mon Jan 30 21:11:44 CET 2012

Arnaud Delobelle wrote:
> On 30 January 2012 19:25, Ethan Furman <ethan at stoneleaf.us> wrote:
>>>   I do. The object has two different interfaces for the same values and
>>> that's IMO unpythonic. The Zen says
>>>   "There should be one-- and preferably only one --obvious way to do it."
>> Indeed.
>> When you have the attribute name stored in a variable, then the one obvious
>> way is [] access.
> If it's an attribute, the obvious way is getattr(obj, attrname)

Fair point.

I guess I'll be happy that Python will let me do it the way that works 
better for me. :)

I think the thing to keep in mind is that this Bunch type object is not 
general purpose, like a dict is:  it is specialized -- only string keys, 
only keys that don't conflict with methods (or no methods, depending on 
the needs), etc., etc.

My custom object that works this way has attributes/methods divided by 
size:  10 or less and it's an attribute; more and it's a method.  Works 
well for me.  (10 because that's the maximum size for a field name in a 
dbf table (version 5 and below, anyway).)


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