[Dev] Re: [commits] (alecf) [9424] use import instead of schema.ns when you can!

[Morgen Sagen]

Makes sense -- thanks for the info!


On Feb 8, 2006, at 4:09 PM, Alec Flett wrote:

> Well for one, you don't introduce parcel-loading dependencies and  
> side-effects
>
> i.e.
>
> startup = schema.ns('osaf.startup')
> may have the side-effect of loading and installing the osaf.startup  
> parcel
>
> whereas
>
> from osaf import startup
> only loads the python code.
>
> Further, there are dependency-analysis tools for python out there  
> that don't know anything about schema.ns, but they know loads about  
> import. They can be used to track down circular dependencies,  
> allowing us to make our code more modular.
>
> My take is this: use schema.ns() only when you're actually  
> accessing data in that parcel - if you're just loading code use import
>
> Alec
>
> Morgen Sagen wrote:
>> Not that I necessarily disagree, but why is one way preferable to  
>> the other?
>>
>> On Feb 8, 2006, at 9:47 AM, commits at osafoundation.org wrote:
>>
>>> Revision 9424 Author alecf Date 2006-02-08 09:47:57 -0800 (Wed,  
>>> 08 Feb 2006) Log Message
>>> use import instead of schema.ns when you can!
>>
>> The relevant change was:
>>
>> + from osaf import startup
>> - startup = schema.ns("osaf.startup", parcel)
>>
>> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
>>
>> Open Source Applications Foundation "Dev" mailing list
>> http://lists.osafoundation.org/mailman/listinfo/dev
>