[SciPy-dev] scipy.stats._chk_asarray

Pierre GM pgmdevlist@gmail....
Wed Jun 3 10:37:03 CDT 2009


On Jun 3, 2009, at 9:40 AM, josef.pktd@gmail.com wrote:

> On Wed, Jun 3, 2009 at 2:17 AM, Pierre GM <pgmdevlist@gmail.com>  
> wrote:
>>
>> On Jun 3, 2009, at 1:09 AM, josef.pktd@gmail.com wrote:
>>>
>>> Given my experience with views, I would prefer to limit them to very
>>> local usage, e.g. views on transposed arrays don't work,
>>
>
> there was a thread started by Pauli that inplace operations work on
> the base and not the view.
> I fell over this case and similar cases:

Well noted, but I doubt it's relevant in our simple case ?

> Is there a reason that you prefer   view(output_type)
> to  __array_wrap__
> which from the help and reading the numpy source seems to be the
> "standard" approach?

I remember running into some troubles with __array_wrap__ (like it not  
being called when I expected to, or missing some elements), but  
details elude me right now, sorry.


> So, a general decorator looks quite complicated, especially if we want
> to preserve autocomplete (Paulis comment) and not special case all
> different kinds of inputs and outputs, and might need to contain a lot
> of magic.

Well, a catch-all decorator is not the objective, is it? Of course we  
need to adapt to particular cases, but are we running into that many  
special cases for the descriptive statistics we're working on? I don't  
think your example of f_oneway is relevant to the current problem, for  
example.
  I still think that in many simple cases, such as the ones we're  
interested in, a decorator is cleaner.
Now, the issue w/ docstrings is a big one, and requires us to give it  
some thought.


>
> functools was added in python 2.5

Not a problem w/ recent versions of numpy, where we don't support <2.5  
anymore ?





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