From fredrik at pythonware.com  Tue Jul 15 13:22:16 2008
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 15 Jul 2008 13:22:16 +0200
Subject: [XML-SIG] elementtree and uncomplete parsing
In-Reply-To: <1213994442.485c15ca1aaca@imp.free.fr>
References: <1213994442.485c15ca1aaca@imp.free.fr>
Message-ID: <g5i198$u9v$1@ger.gmane.org>

jeanmarc.chourot at free.fr wrote:

> I would like to retrieve what is between the tags <node> ...</node> into
> strings, the "subelements" being considered as simple string and not processed
> by elelement tree.
> In other words, this could be badly formed HTML  not processed embeded into well
> formed xml tags.
> 
> i.e. :
> string1 = "This text <thistag> is completely crap </thistag> because
> <anothertag> blabla </anothertag>"
> string2="This is another <thisnotag> node </thisnotag> with <anothertaggy>
> random tags </anothertaggy>"

You say parse, but your description seems to say that you want to 
serialize the contents of an XML node, but without getting the outermost 
element.  Is that correct?

In ET 1.3, you can do do this by setting the tag to None and then 
serializing the node as usual, but to do this in 1.2 (as shipped with 
Python 2.5), you need to process the string afterwards.

Assuming the element you want to serialize in the variable "node", you 
can do:

 >>> node
<Element node at c770d0>
 >>> s = ET.tostring(node)
 >>> s
'<node>something some other thing <tag>hello</tag> text</node>'
 >>> _, _, s = s.partition(">") # chop off first tag
 >>> s, _, _ = s.rpartition("<") # chop off last tag
 >>> s
'something some other thing <tag>hello</tag> text'
 >>>

Alternatively, you can "normalize" the node and use ordinary slicing:

 >>> node.tag = "node" # make sure we know what it is
 >>> node.attrib.clear()
 >>> s = ET.tostring()
 >>> s = ET.tostring(node)
 >>> s = s[6:-7]
 >>> s
'something some other thing <tag>hello</tag> text'
 >>>

</F>


From joshua.r.english at gmail.com  Sat Jul 19 17:27:13 2008
From: joshua.r.english at gmail.com (Josh English)
Date: Sat, 19 Jul 2008 08:27:13 -0700
Subject: [XML-SIG] Parser not resetting
Message-ID: <e53a3a5d0807190827j34ca317dga933d41c22c7eb2@mail.gmail.com>

I have a file of XML-data objects. I wrote a ContentHandler to search
for elements and return them in a variety of formats. Once I plugged
all this into a GUI I discovered a strange problem. The function call
tells a parser to parse the same source file, but it stops reading the
source file and limits searching to previously found results.

I'm using a ConfigParser object to determine what to match, but I
don't think this is the problem.

The code uses an xml.sax.handler.ContentHandler subclass,  that stores
the results in "output" and the filter function is :

def list_submissions(argstring,filters={}):
    sh=SubHandler(argstring,filters)
    parser = make_parser()
    parser.setContentHandler(sh)
    parser.parse(open(submissionpath))

    return sh.output

running this function over and over causes the problem

print len(list_submissions("--dict")  # Get all submissions as
dictionary objects
print len(list_submissions("-mAsmv --dict") # Get all submissions to
this this market
print len(list_submissions("--dict") # Get all submissions again

the results:

152
7
7

The last call should give me 152.

I'm not finding a method to reset a parser. I've tried deleting the
parser object in the function, deleting the parser and the content
handler object in the function, but nothing seems to solve this
problem.

Has anyone seen this? I'm running Python 2.5.1 (r251:54863, Apr 18
2007, 08:51:08) [MSC v.1310 32 bit (Intel)], using the standard xml
files with this distribution.

Thanks,

Josh English
Joshua.R.English at gmail.com
http://joshenglish.livejournal.com

From fredrik at pythonware.com  Sat Jul 19 20:54:36 2008
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 19 Jul 2008 20:54:36 +0200
Subject: [XML-SIG] Parser not resetting
In-Reply-To: <e53a3a5d0807190827j34ca317dga933d41c22c7eb2@mail.gmail.com>
References: <e53a3a5d0807190827j34ca317dga933d41c22c7eb2@mail.gmail.com>
Message-ID: <g5td9e$6l7$1@ger.gmane.org>

Josh English wrote:
> The code uses an xml.sax.handler.ContentHandler subclass,  that stores
> the results in "output" and the filter function is :
> 
> def list_submissions(argstring,filters={}):
>     sh=SubHandler(argstring,filters)
>     parser = make_parser()
>     parser.setContentHandler(sh)
>     parser.parse(open(submissionpath))
> 
>     return sh.output
> 
> running this function over and over causes the problem

what's filters here?  are you aware of this issue:

     http://effbot.org/zone/default-values.htm

?

</F>


From ericchao0613 at gmail.com  Thu Jul 24 10:29:46 2008
From: ericchao0613 at gmail.com (Eric Chao)
Date: Thu, 24 Jul 2008 16:29:46 +0800
Subject: [XML-SIG] Creating XML with Python
Message-ID: <f5f993730807240129h4860bfaan9d6aca6b45da478f@mail.gmail.com>

I've been trying to convert some text that has some odd coding to xml. I am
trying to use python to create a program that will process this text:
<BN>GENESIS</BN>
<CN>CHAPTER 1</CN>
<SH>The Creation</SH>
<C>{{01:1}}1 <RA>In the beginning <RB>God <RC>created the heavens and the
earth.
<V>{{01:1}}2 The earth was <$FOr {a waste and emptiness}>><N1><RA>formless
and void, and <RB>darkness was over the
<V>{{01:1}}3 Then <RA>God said, ``Let there be light"; and there was light.



to something like this:

<book osisID="Gen">
<chapter sID="Gen.1"/>
<p><verse sID="Gen.1.1"/>In the beginning God created the heaven and the
earth.<verse eID="Gen.1.1"/></p>
<p><verse sID="Gen.1.2"/>And the earth was without form, and void; and
darkness was upon the face of the deep. And the Spirit of God moved upon the
face of the waters.<verse eID="Gen.1.2"/></p>
<p><verse sID="Gen.1.3"/>And God said, Let there be light: and there was
light.<verse eID="Gen.1.3"/></p>


I am not very good with Python and I was hoping someone could offer some
advice on how to get started. I tried to write a program that produces XML,
but I think I need more of a find and replace type program. Thanks !


-Eric
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From fredrik at pythonware.com  Thu Jul 24 14:04:58 2008
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 24 Jul 2008 14:04:58 +0200
Subject: [XML-SIG] Creating XML with Python
In-Reply-To: <f5f993730807240129h4860bfaan9d6aca6b45da478f@mail.gmail.com>
References: <f5f993730807240129h4860bfaan9d6aca6b45da478f@mail.gmail.com>
Message-ID: <g69r5b$rdr$1@ger.gmane.org>

Eric Chao wrote:

> I've been trying to convert some text that has some odd coding to xml. I 
> am trying to use python to create a program that will process this text:
> 
> <BN>GENESIS</BN>
> <CN>CHAPTER 1</CN>
> <SH>The Creation</SH>
> <C>{{01:1}}1 <RA>In the beginning <RB>God <RC>created the heavens and 
> the earth.
> <V>{{01:1}}2 The earth was <$FOr {a waste and 
> emptiness}>><N1><RA>formless and void, and <RB>darkness was over the 
> <V>{{01:1}}3 Then <RA>God said, ``Let there be light"; and there was light.
> 
> to something like this:
> 
> <book osisID="Gen">
> <chapter sID="Gen.1"/>
> <p><verse sID="Gen.1.1"/>In the beginning God created the heaven and the 
> earth.<verse eID="Gen.1.1"/></p>
> <p><verse sID="Gen.1.2"/>And the earth was without form, and void; and 
> darkness was upon the face of the deep. And the Spirit of God moved upon 
> the face of the waters.<verse eID="Gen.1.2"/></p>
> <p><verse sID="Gen.1.3"/>And God said, Let there be light: and there was 
> light.<verse eID="Gen.1.3"/></p>
> 
> I am not very good with Python and I was hoping someone could offer some 
> advice on how to get started. I tried to write a program that produces 
> XML, but I think I need more of a find and replace type program. Thanks !

that looks a rather daunting task even for an experienced Python 
programmer (especially mapping between different translations ;-).

I'd concentrate on parsing the original file format first, before even 
thinking about how to write it out in XML.

it might be some kind of SGML, in which case the standard sgmllib 
library might be helpful:

     http://effbot.org/librarybook/sgmllib.htm

if that seems to work, try building some suitable data structure from 
the incoming data (lists of strings might work, but you might want to 
create some simple container objects that holds the lists for you).

when you have all this in place, you can either just walk the data 
structure and create XML on the fly (don't forget to escape reserved 
characters; you can use cgi.escape for that), or build e.g. an 
ElementTree (xml.tree) and then ask that module to serialize the tree 
for you.

hope this helps, at least a little.

</F>


From stefan_ml at behnel.de  Thu Jul 24 14:14:57 2008
From: stefan_ml at behnel.de (Stefan Behnel)
Date: Thu, 24 Jul 2008 14:14:57 +0200 (CEST)
Subject: [XML-SIG] Creating XML with Python
In-Reply-To: <f5f993730807240129h4860bfaan9d6aca6b45da478f@mail.gmail.com>
References: <f5f993730807240129h4860bfaan9d6aca6b45da478f@mail.gmail.com>
Message-ID: <51226.213.61.181.86.1216901697.squirrel@groupware.dvs.informatik.tu-darmstadt.de>

Eric Chao wrote:
> advice on how to get started. I tried to write a program that produces
> XML, but I think I need more of a find and replace type program. Thanks !

You might find these interesting:

http://codespeak.net/lxml/tutorial.html#the-e-factory
http://codespeak.net/lxml/s5/lxml-ep2008.html

Stefan


From jcd at unc.edu  Thu Jul 24 14:30:18 2008
From: jcd at unc.edu (J. Clifford Dyer)
Date: Thu, 24 Jul 2008 08:30:18 -0400
Subject: [XML-SIG] Creating XML with Python
In-Reply-To: <g69r5b$rdr$1@ger.gmane.org>
References: <f5f993730807240129h4860bfaan9d6aca6b45da478f@mail.gmail.com>
	<g69r5b$rdr$1@ger.gmane.org>
Message-ID: <1216902618.31596.2.camel@jcd-desktop>

On Thu, 2008-07-24 at 14:04 +0200, Fredrik Lundh wrote:
> Eric Chao wrote:
> 
> > I've been trying to convert some text that has some odd coding to xml. I 
> > am trying to use python to create a program that will process this text:
> > 
> > <BN>GENESIS</BN>
> > <CN>CHAPTER 1</CN>
> > <SH>The Creation</SH>
> > <C>{{01:1}}1 <RA>In the beginning <RB>God <RC>created the heavens and 
> > the earth.
> > <V>{{01:1}}2 The earth was <$FOr {a waste and 
> > emptiness}>><N1><RA>formless and void, and <RB>darkness was over the 
> > <V>{{01:1}}3 Then <RA>God said, ``Let there be light"; and there was light.
> > 
> > to something like this:
> > 
> > <book osisID="Gen">
> > <chapter sID="Gen.1"/>
> > <p><verse sID="Gen.1.1"/>In the beginning God created the heaven and the 
> > earth.<verse eID="Gen.1.1"/></p>
> > <p><verse sID="Gen.1.2"/>And the earth was without form, and void; and 
> > darkness was upon the face of the deep. And the Spirit of God moved upon 
> > the face of the waters.<verse eID="Gen.1.2"/></p>
> > <p><verse sID="Gen.1.3"/>And God said, Let there be light: and there was 
> > light.<verse eID="Gen.1.3"/></p>
> > 
> > I am not very good with Python and I was hoping someone could offer some 
> > advice on how to get started. I tried to write a program that produces 
> > XML, but I think I need more of a find and replace type program. Thanks !
> 
> that looks a rather daunting task even for an experienced Python 
> programmer (especially mapping between different translations ;-).
> 
> I'd concentrate on parsing the original file format first, before even 
> thinking about how to write it out in XML.
> 
> it might be some kind of SGML, in which case the standard sgmllib 
> library might be helpful:
> 
>      http://effbot.org/librarybook/sgmllib.htm
> 
> if that seems to work, try building some suitable data structure from 
> the incoming data (lists of strings might work, but you might want to 
> create some simple container objects that holds the lists for you).

If it turns out not to be valid SGML, you may need to look into using
pyparsing.  There was a good introduction to it in a recent issue of
python magazine.  There are also a bunch of online tutorials.

-- 
Oook!
J. Cliff Dyer
Carolina Digital Library and Archives
UNC Chapel Hill


From jsulak at gmail.com  Sun Jul 27 18:40:13 2008
From: jsulak at gmail.com (James Sulak)
Date: Sun, 27 Jul 2008 11:40:13 -0500
Subject: [XML-SIG] Replicating DTD information using XMLFilterBase and
	XMLGenerator
Message-ID: <7cb78b3b0807270940r3b0d6a78n323ec6b4bf7e2319@mail.gmail.com>

Hello All,

I'm attempting to use xml.sax.utils.XMLFilterBase and XMLGenerator to
take an input XML document, filter out certain elements, and output
the result to a second XML file.  I have it mostly working, except
that I lose the DTD declaration and anything (processing instructions
or comments) before the root element.  I believe I'm supposed to be
using a LexicalHandler to get the information from the DTD, but I have
not been able to figure out how to do this, or how to integrate it
with the rest of the code.

I'm pretty new at using Python (and SAX, for that matter) to work with
XML, so I'm hoping this is a fairly simple question.  I'm basing my
code off of Uche Ogbuji's example at
http://www.ibm.com/developerworks/xml/library/x-tipsaxflex.html#resources.
 Any help would be appreciated.

Thanks,

-James

From stefan_ml at behnel.de  Sun Jul 27 22:38:44 2008
From: stefan_ml at behnel.de (Stefan Behnel)
Date: Sun, 27 Jul 2008 22:38:44 +0200
Subject: [XML-SIG] Replicating DTD information using XMLFilterBase and
 XMLGenerator
In-Reply-To: <7cb78b3b0807270940r3b0d6a78n323ec6b4bf7e2319@mail.gmail.com>
References: <7cb78b3b0807270940r3b0d6a78n323ec6b4bf7e2319@mail.gmail.com>
Message-ID: <488CDCD4.5040001@behnel.de>

Hi,

James Sulak wrote:
> I'm attempting to use xml.sax.utils.XMLFilterBase and XMLGenerator to
> take an input XML document, filter out certain elements, and output
> the result to a second XML file.  I have it mostly working, except
> that I lose the DTD declaration and anything (processing instructions
> or comments) before the root element.  I believe I'm supposed to be
> using a LexicalHandler to get the information from the DTD, but I have
> not been able to figure out how to do this, or how to integrate it
> with the rest of the code.
>
> I'm pretty new at using Python (and SAX, for that matter) to work with
> XML

Try lxml's iterparse() instead of SAX. It will build an in-memory tree
(including the DTD or its reference if you want, see the parser docs), but you
can remove the unwanted elements from the tree while it parses. It's still
pretty memory friendly and definitely a lot easier to work with than SAX.

http://codespeak.net/lxml/parsing.html#iterparse-and-iterwalk
http://codespeak.net/lxml/tutorial.html#parsing-from-strings-and-files

Stefan

From spencer.crissman at gmail.com  Mon Jul 28 18:13:33 2008
From: spencer.crissman at gmail.com (spencer.c)
Date: Mon, 28 Jul 2008 09:13:33 -0700 (PDT)
Subject: [XML-SIG]  lxml - html entities
Message-ID: <18693223.post@talk.nabble.com>


I am using lxml to process some xhtml files.  The files have html character
codes embedded in them.  For instance: &#39; rather than a '.  When I parse
the files, edit them, and then write them back out, I want my edits to be
the only changes in the output files, but lxml is replacing the character
codes with the actual characters they are supposed to represent as well.

So if I have:
It& #39;s an example. <-- Space inserted to help readability.

It is writing out:
It's an example.  

I've tried setting resolve_entities to false, ala:
tree = etree.parse(input, etree.XMLParser(resolve_entities=False))

But this seems to have no effect.

There a way to tell lxml to ignore these/leave them as is?

Thanks.

-s
-- 
View this message in context: http://www.nabble.com/lxml---html-entities-tp18693223p18693223.html
Sent from the Python - xml-sig mailing list archive at Nabble.com.


From mnvl16 at yahoo.co.uk  Mon Jul 28 18:58:22 2008
From: mnvl16 at yahoo.co.uk (Jack Grahl)
Date: Mon, 28 Jul 2008 16:58:22 +0000 (GMT)
Subject: [XML-SIG] Catalog.py - is it possible to convert playlists to
	unicode on-the-fly?
Message-ID: <394083.27755.qm@web27905.mail.ukl.yahoo.com>

Hi there,

I have had serpentine choke on an .m3u playlist which, closer inspection revealed, had filenames which included special characters in iso-latin-1 encoding. The files themselves had, i believe, their filenames automatically converted to the same characters in utf-8 encoding. (This was the result of ripping mp3s on a Windows machine and transferring the files)

I looked into the code a little bit and found that the playlist decoding mechanism is in /usr/lib/python2.5/site-packages/Ft/Xml/Catalog.py. The first place that python chokes on a non-unicode string is at line 332, however the 'uri' string is used at many places after that. 

Now, I understand that the module has no obligation to make sense of a playlist which does not use the same encoding as the filename in question, and so in fact points to a file which to all intents and purposes isn't there. However as the behaviour is a little difficult for the end user to deal with, I wondered if it would be possible to make modifications to the code so that, in the event of the playlist files not being found, it guesses at an alternate encoding, translates the string to utf-8 based on that guess, and looks for the new filenames? Obviously it's not difficult to check that such a guess is right if the files in question do exist.

If anyone has any advice as to whether this is a good idea, and how to implement it, I would be very grateful.

Yours, Jack Grahl



      __________________________________________________________
Not happy with your email address?.
Get the one you really want - millions of new email addresses available now at Yahoo! http://uk.docs.yahoo.com/ymail/new.html

From jsulak at gmail.com  Tue Jul 29 02:56:32 2008
From: jsulak at gmail.com (James Sulak)
Date: Mon, 28 Jul 2008 19:56:32 -0500
Subject: [XML-SIG] Replicating DTD information using XMLFilterBase and
	XMLGenerator
In-Reply-To: <488CDCD4.5040001@behnel.de>
References: <7cb78b3b0807270940r3b0d6a78n323ec6b4bf7e2319@mail.gmail.com>
	<488CDCD4.5040001@behnel.de>
Message-ID: <7cb78b3b0807281756u780ee47ckb50bd9043b2bd548@mail.gmail.com>

Thanks, Stefan, for pointing me to lxml.  It looks like a good
alternative to SAX in this situation.  However, I'm a little confused
as to the best way to remove elements from the tree while keeping
their tail text.  This is what I have so far:

context = etree.iterparse("test.xml")

for event, element in context:
    for title in element.xpath("child::title"):
        element.remove(title)

Do I need to explicitly assign the tail text to either the parent or
the preceding sibling?  If so, what's the best way to accomplish that?

Thanks,

-James


On Sun, Jul 27, 2008 at 3:38 PM, Stefan Behnel <stefan_ml at behnel.de> wrote:
> Hi,
>
> James Sulak wrote:
>> I'm attempting to use xml.sax.utils.XMLFilterBase and XMLGenerator to
>> take an input XML document, filter out certain elements, and output
>> the result to a second XML file.  I have it mostly working, except
>> that I lose the DTD declaration and anything (processing instructions
>> or comments) before the root element.  I believe I'm supposed to be
>> using a LexicalHandler to get the information from the DTD, but I have
>> not been able to figure out how to do this, or how to integrate it
>> with the rest of the code.
>>
>> I'm pretty new at using Python (and SAX, for that matter) to work with
>> XML
>
> Try lxml's iterparse() instead of SAX. It will build an in-memory tree
> (including the DTD or its reference if you want, see the parser docs), but you
> can remove the unwanted elements from the tree while it parses. It's still
> pretty memory friendly and definitely a lot easier to work with than SAX.
>
> http://codespeak.net/lxml/parsing.html#iterparse-and-iterwalk
> http://codespeak.net/lxml/tutorial.html#parsing-from-strings-and-files
>
> Stefan
>

From stefan_ml at behnel.de  Tue Jul 29 07:42:03 2008
From: stefan_ml at behnel.de (Stefan Behnel)
Date: Tue, 29 Jul 2008 07:42:03 +0200
Subject: [XML-SIG] Replicating DTD information using XMLFilterBase and
 XMLGenerator
In-Reply-To: <7cb78b3b0807281756u780ee47ckb50bd9043b2bd548@mail.gmail.com>
References: <7cb78b3b0807270940r3b0d6a78n323ec6b4bf7e2319@mail.gmail.com>	
	<488CDCD4.5040001@behnel.de>
	<7cb78b3b0807281756u780ee47ckb50bd9043b2bd548@mail.gmail.com>
Message-ID: <488EADAB.3000303@behnel.de>

Hi,

James Sulak wrote:
> Thanks, Stefan, for pointing me to lxml.  It looks like a good
> alternative to SAX in this situation.  However, I'm a little confused
> as to the best way to remove elements from the tree while keeping
> their tail text.  This is what I have so far:
> 
> context = etree.iterparse("test.xml")
> 
> for event, element in context:
>     for title in element.xpath("child::title"):

it's likely faster to use

    for title in element.iterchildren("title"):

here.

>         element.remove(title)
> 
> Do I need to explicitly assign the tail text to either the parent or
> the preceding sibling?

Yes, the tail text is part of the Element object. Take a look at the
"drop_tree" and "drop_tag" methods in lxml.html.

http://codespeak.net/svn/lxml/trunk/src/lxml/html/__init__.py

Stefan

From stefan_ml at behnel.de  Tue Jul 29 07:43:28 2008
From: stefan_ml at behnel.de (Stefan Behnel)
Date: Tue, 29 Jul 2008 07:43:28 +0200
Subject: [XML-SIG] lxml - html entities
In-Reply-To: <18693223.post@talk.nabble.com>
References: <18693223.post@talk.nabble.com>
Message-ID: <488EAE00.4040201@behnel.de>

(this is being discussed on the lxml mailing list)

spencer.c wrote:
> I am using lxml to process some xhtml files.  The files have html character
> codes embedded in them.  For instance: &#39; rather than a '.  When I parse
> the files, edit them, and then write them back out, I want my edits to be
> the only changes in the output files, but lxml is replacing the character
> codes with the actual characters they are supposed to represent as well.
> 
> So if I have:
> It& #39;s an example. <-- Space inserted to help readability.
> 
> It is writing out:
> It's an example.  
> 
> I've tried setting resolve_entities to false, ala:
> tree = etree.parse(input, etree.XMLParser(resolve_entities=False))
> 
> But this seems to have no effect.
> 
> There a way to tell lxml to ignore these/leave them as is?
> 
> Thanks.
> 
> -s

From ericchao0613 at gmail.com  Tue Jul 29 08:39:16 2008
From: ericchao0613 at gmail.com (Eric Chao)
Date: Tue, 29 Jul 2008 14:39:16 +0800
Subject: [XML-SIG] find and replace
Message-ID: <f5f993730807282339h3a1dcf28v301cc874a76dea28@mail.gmail.com>

Hey,
So I've been trying to find and replace some text with python using regular
expression, but I haven't been able to make permanent changes and just to
the files.

-this is the data in the original file.

@#$The Creation@#$%
{{01:1}}1 In the beginning God created the heavens and the earth.
{{01:1}}2 The earth was <$FOr {a waste and emptiness}>>formless and void,
and darkness was over the surface of the deep, and the Spirit of God was
<$FOr {hovering}>>moving over the surface of the waters.
{{01:1}}3 Then God said, ``Let there be light"; and there was light.
{{01:1}}4 God saw that the light was good; and God separated the light from
the darkness.

-I want to replace @#$ with <title> and <@#$%> with </title> using python.

After I replace a few elements, I can start creating xml.

Can anyone offer some insight as to how to do this ? It would be greatly
appreciated. Thanks !

-Eric
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From tjabaut at gmail.com  Thu Jul 31 20:31:42 2008
From: tjabaut at gmail.com (tjabaut)
Date: Thu, 31 Jul 2008 11:31:42 -0700 (PDT)
Subject: [XML-SIG] How to Parse XML with Single Element & Multiple Attribures
Message-ID: <fbb79995-c88d-4ff3-9f20-b5c979cef572@l42g2000hsc.googlegroups.com>

I have an app where the API returns an XML state with a single element
that contains a number of attributes (depending on which API is
called).

I would like ot know how I can step through these Attributes so that I
can populate an XHTML results page.

I am pretty new to Python, but would love to figure this out.