object data member dumper?

[tom arnall]

Steve Holden wrote:

> tom arnall wrote:
>> Steve Holden wrote:
>> 
>> 
>>>Bruno Desthuilliers wrote:
>>>
>>>>tom arnall a écrit :
>>>>
>>>>
>>>>>does anyone know of a utility to do a recursive dump of object data
>>>>>members?
>>>>>
>>>>
>>>>
>>>>What are "object data members" ? (hint: in Python, everything is an
>>>>object - even functions and methods).
>>>>
>>>>What is your real use case ?
>>>
>>>Basically it sounds like the OP wants to see the attribute values for an
>>>object (and those objects' attribute values, ...). Presumably the
>>>recursive descent could be stopped at the built-in types.
>> 
>> 
>> Yes, exactly. But what is 'OP'?
>> 
> "original poster" (you)
>> 
>>>I'm not familiar with any such thing.
>> 
>> 
>> I'm amazed that there is no way to easily look at the fundamental data
>> structures of a python program. I'm new to python - is there something I
>> don't know about the territory in this regard?
>> 
> Well, new enough to be unaware that Python normally doesn't need such
> drastic measures for debugging. When you are building complex data
> structures such a form of output could get big really quickly. I've
> never come across anything like it in any other language that I have used.

never come across the complexity of data structures or across an object
displayer?

> 
> The most that's usually required is a __repr__() method that dumps the
> values of necessary data attributes.

what about __dict__?


>> 
>>>The code of the standard library's
>>>pprint module might be a good place to start
>> 
>> 
>> I played around with this but it seems more targetted to looking at
>> python objects as opposed to user-defined.
>> 
> It is, but it could be used as a basis for something more to your liking.
>> 
>>>(and the suggested
>>>functionality might make a nice addition if we could work out exactly
>>>what the requirement was).
>> 
>> 
>> I would be glad if people would comment on my example as a step in this
>> direction.
>> 
> I'd suggest you instead consider a mixin object that will add recursive
> data dump functionality to any such classes you require.

have googled a fair amount on 'mixin' but still stumped on it.




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