python-quantities-developers team mailing list archive

["Darren Dale" <dsdale24@xxxxxxxxx>]

John, thats great. Thank you!

I woke up this morning with ideas about how UnitQuantity could derive from
object, and would have a dimensionality property but Quantity would not. I'm
just beginning to experiment, but I think I have a pretty good idea of how
it all fits together conceptually. I'll publish a branch if it works out.

On Tue, Jan 20, 2009 at 2:11 AM, John Salvatier <jsalvatier@xxxxxxxxx>wrote:

> One random thing:
>
> I started using the following decorator for passing along numpy doc
> strings:
>
> def usedoc(new_method, doc_method, prefix = "", suffix ="" ):
>     """
>     This decorator gives the function the doc string of another method
>
>     doc_method - the method from which to get the doc string
>     prefix - a string to append to the front of the doc string
>     suffix - a string to append to the beginning of the doc string
>     """
>     new_method.__doc__ = prefix + doc_method.__doc__ + suffix
>     return new_method
>
> use it as follows:
> @usedoc(numpy.cumprod, suffix = "\n a must be dimensionless")
> def cumprod (a , axis, dtype, out) :
>  #   Return the cumulative product of elements along a given axis.
>     return a.cumprod(axis, dtype, out)
>
>
> On Mon, Jan 19, 2009 at 7:05 PM, Darren Dale <dsdale24@xxxxxxxxx> wrote:
>
>> I am starting to feel fairly satisfied with the way the trunk is shaping
>> up. Tonight I made a list of things I would like to finish before tagging
>> version 0.5, which is somewhat arbitrary, but I can identify at least 5
>> major phases of development and it has been 5 months since I began the
>> project. The list includes:
>>
>> * finish implementing customization of default units (nearly complete)
>> * finish reimplementing in-place modification of units property, with
>> check that .base is not a Quantity
>> * check that units have magnitude 1 before setting
>> * regular expression to convert exponents to unicode superscripts
>> * dont import constants by default, its time consuming
>> * option for constants to be loaded as regular Quantitys with an
>> uncertainty attribute, instead of UncertainQuantitys
>> * dimensionality property should return a copy (Quantity's dimensionality
>> is not meant to be messed with directly)
>> * UncertainQuantity arithmetic should check that uncertainty units are
>> same as the parent, (users could have modified the uncertainty's units in
>> place)
>> * attempt to cover all features with unit tests, especially any listed in
>> documentation
>> * unit tests for ascii markup
>> * rework unit tests, reorganize into subpackage and modules that are run
>> in a specific order to catch errors as early as possible (get rid of
>> unittest.TestCase, it screws up the order of execution)
>> * proper implementation of __array__ and __array_wrap__ (need some input
>> from the numpy mailing list)
>> * find an appropriate value for __array_priority__
>> * pass through numpy docstrings where appropriate
>> * docstrings and api documentation
>> * documentation --- tutorial
>> * documentation --- discussion of Quantities' design
>> * consider removing remaining magic (auto-simplification or auto-rescaling
>> in a few places)
>> * any ufuncs that need to be supported?
>> * should dimensionalities get references to existing units, as is done
>> now, or should they get their own copies?
>>
>> I would prefer to work on these issues myself, and I think it may take me
>> another month to work through the list.
>>
>> Darren
>>
>>
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>
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