[Python-ideas] Dict-like object with property access
ethan at stoneleaf.us
Mon Jan 30 20:25:12 CET 2012
Oleg Broytman wrote:
> On Mon, Jan 30, 2012 at 12:49:54PM -0600, Massimo Di Pierro wrote:
>> STEP 2) We can now overload the  to make the dynamic attributes accessible in an alternative syntax:
>> class Dummy(object):
>> def __getitem__(self,key): return getattr(self,key)
>> def __setitem__(self,key,value): return setattr(self,key,value)
>> d = Dummy()
>> d.something = 5
>> d['something'] = 5
>> print d.something
>> print d['something']
>> STEP 3) Is anybody calling this un-pythonic?
> 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."
When you have the attribute name stored in a variable, then the one
obvious way is  access.
When you already know the attribute name, the one obvious way is . access.
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