Instance Names

[Tim Cook]

Hi All,

I have a need (if at all possible) to create instance names using '['
and ']', i.e. [at0000]=ClassA0(), [at0001]=ClassB2(), etc.

Of course Python tries to unpack a sequence when I do that. Is there
anyway to do this?

I do have a workaround but it is an ugly, nasty URL mangling thing. :-)

Cheers,
Tim

--
Timothy Cook, MSc
Health Informatics Research & Development Services
LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook
Skype ID == timothy.cook
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[Larry Bates]

Tim Cook wrote:

Hi All,

I have a need (if at all possible) to create instance names using '['
and ']', i.e. [at0000]=ClassA0(), [at0001]=ClassB2(), etc.

Of course Python tries to unpack a sequence when I do that. Is there
anyway to do this?

I do have a workaround but it is an ugly, nasty URL mangling thing. :-)

Cheers,
Tim

I suspect there is some "misunderstanding" here. Why exactly do you think you
need to have your instances named with [] characters in them?
You could put them in a dictionary:

instances = {}

instance['[at0000']] = ClassA0()
but that isn't really different than:

instance['at0000'] = ClassA0()

-Larry

[Tim Cook]

On Thu, 2008-07-03 at 14:20 -0500, Larry Bates wrote:

I suspect there is some "misunderstanding" here. Why exactly do you think you
need to have your instances named with [] characters in them?

I often misunderstand. :-)

But, I am implementing specifications in Python that are already
implemented in other languages.

http://www.openehr.org/releases/1.0.1/roadmap.html

These specifications say that an archetype node id consists of
identifiers like [at0000] and [at0001]. Now these are valid URIs and
the associated query language (AQL) used by other services will send
queries with those characters in them.

For example:
FROM EHR [ehr_id/value=$ehrUid] CONTAINS COMPOSITION
[openEHR-EHR-COMPOSITION.encounter.v1]
CONTAINS OBSERVATION obs [openEHR-EHR-OBSERVATION.blood_pressure.v1]
WHERE
obs/data[at0001]/events[at0006]/data[at0003]/items[at0004]/value/value

>= 140

Since I am also using Zope3 it would be easier on me to name the
instances with those characters.

But my fall back is to set at0000.__name__='[at0000]' and manipulate the
query to match __name__ instead of the actual instance ID.

Thoughts?

--Tim



--
Timothy Cook, MSc
Health Informatics Research & Development Services
LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook
Skype ID == timothy.cook
************************************************** ************
*You may get my Public GPG key from popular keyservers or *
*from this link http://timothywayne.cook.googlepages.com/home*
************************************************** ************

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[Larry Bates]

Tim Cook wrote:

On Thu, 2008-07-03 at 14:20 -0500, Larry Bates wrote:

>I suspect there is some "misunderstanding" here. Why exactly do you think you
need to have your instances named with [] characters in them?

I often misunderstand. :-)

But, I am implementing specifications in Python that are already
implemented in other languages.

http://www.openehr.org/releases/1.0.1/roadmap.html

These specifications say that an archetype node id consists of
identifiers like [at0000] and [at0001]. Now these are valid URIs and
the associated query language (AQL) used by other services will send
queries with those characters in them.

For example:
FROM EHR [ehr_id/value=$ehrUid] CONTAINS COMPOSITION
[openEHR-EHR-COMPOSITION.encounter.v1]
CONTAINS OBSERVATION obs [openEHR-EHR-OBSERVATION.blood_pressure.v1]
WHERE
obs/data[at0001]/events[at0006]/data[at0003]/items[at0004]/value/value

>= 140

Since I am also using Zope3 it would be easier on me to name the
instances with those characters.

But my fall back is to set at0000.__name__='[at0000]' and manipulate the
query to match __name__ instead of the actual instance ID.

Thoughts?

--Tim

If these will be class attributes, I believe you can use setattr()

setattr('[at0000]') = ...

obj = getattr(self, '[at0000]')

-Larry