[XML-SIG] So how can _we_ use XML?
JOE_ELLSWORTH@HP-Cupertino-om5.om.hp.com
JOE_ELLSWORTH@HP-Cupertino-om5.om.hp.com
Sun, 30 Aug 1998 02:04:56 -0700
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I would tend to believe that the real value of XML is in allowing client server
communication of complex data structures across primary architectural
boundaries.
In that view I have attached a couple of python source modules which show the
representation of a small data set ran through a few filters showing the data
in different forms. When the data complexity passes a two levels of complexity
XML appears to be a valid approach. XML appears to expand the data
significantly over other representative forms but since the parsers are readily
available in almost any language a lot of other short comings can be over
looked.
I am not a python expert as these utilities represent a portion of my attempts
to learn python.
Execute the file IniMgrTest.py using the Python interpreter. You should see
several different ways to look at the data represented in IniMgrTest.ini. One
of these is a proof of concept XML generator that will walk any dictionary /
arrays hashes and generate appropriate XML.
Thanks joe_ellsworth@hotmail.com
-----Original Message-----
From: Non-HP-xml-sig-admin
/HP-ColSprings,mimegw5/dd.HPMEXT1=xml-sig-admin@python.org
Sent: Friday, August 28, 1998 9:10 AM
To: Non-HP-xml-sig /HP-ColSprings,mimegw5/dd.HPMEXT1=xml-sig@python.org
Cc: Non-HP-akuchlin /HP-ColSprings,mimegw5/dd.HPMEXT1=akuchlin@cnri.reston.va.us
Subject: Re: [XML-SIG] So how can _we_ use XML?
Sean Mc grath writes:
>[Mark Hammond]
>>I tend to learn best by example, so I would like to start using XML somehow!
>>Sow how can/should Python use XML? Where do XML documents fit with Python?
>>I dont mean in an esoteric sense - I mean where does it make sense now? Or
>>at least to be working towards now? The FAQ example in Lars Marius
>>
>Did you see XML programming in Python in Dobbs? August of
>last year I think.
February 1998, according to www.ddj.com. For $5, you can
purchase an electronic copy of the article from the Web site.
In answer to Mark's question: Mark, are you asking what XML
means to the Python codebase itself, or what XML is good for in
general?
In general, XML can be used for any tree-structured data, both
for database-ish applications (say, for product catalogs), or for
document-ish applications (HTML will apparently be mutating into an
XML Document Type Definition in the long term, for example).
If, as seems likely to happen, XML becomes very common, and
the tools are good enough, then when you need a file format, you may
just automatically reach for the XML module, instead of coming up with
your own format from scratch. That way, your files are fairly
readable, and you gain the ability to run XML validators over them,
load them into XML editors, don't need to debug your own custom
parser, and so forth. I think Python is powerful enough, and has a
pleasant enough syntax, that we can make dealing with XML a piece of
cake.
In direct reference to the Python code base, that's a more
tenuous influence. XML doesn't have many repercussions for the Python
interpreter itself, though it is exerting strong pressure to add wide
string support. Fred Drake has long been muttering about converting
the Python docs from LaTeX to some SGML or XML-based format, but
there's no obvious Document Type Definition to use; should we invent a
Python-doco specific one, or use an existing thing such as DocBook?
The LaTeX -> *ML transition will probably happen someday, but there's
no great hurry about it; we can wait and see if SGMLtools helps
DocBook take over the world, or if something else comes up.
Mark Hammond wrote:
>Garshol's document is obviously appealing. Gendoc could possibly generate
>XML instead of direct to HTML?
pythondoc, Daniel Larsson's rewrite of gendoc, can generate
XML; I keep meaning to get around to looking at it and sending Daniel
some comments. See http://starship.skyport.net/crew/danilo/pythondoc/
I think his plan is to translate from the XML format to HTML, LaTeX,
RTF, or whatever, instead of having HTML hard-wired into the code as
in gendoc.
--
A.M. Kuchling http://starship.skyport.net/crew/amk/
"Since the invasion of Grenada," a military source informed me, "we call it
C^5. That's Command, Control, Communications, Computers and Confusion."
-- Barbara Garson, _The Electronic Sweatshop_ (1988)
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Content-Type: text/plain; name="IniMgrTest.ini"
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Content-Transfer-Encoding: quoted-printable
# testIniMgr.ini=0D
# a sample INI file to be read by the iniMgr.py=0D
=0D
# items not in a group are assumed to be in a =0D
# default group of [main]=0D
=0D
First Name =3D joe=0D
Last Name =3D ellsworth=0D
work phone=3D 408-447-1454=0D
home phone=3D 408-248-1820=0D
=0D
[interests]=0D
interest =3D scuba=0D
interest =3D python=0D
interest =3D Mountain Biking=0D
=0D
[home address]=0D
street =3D 19111 Pruneridge Ave=0D
street =3D mailstop #47US=0D
city =3D Cupertino=0D
state =3D CA=0D
=0D
[hp info]=0D
employeeNo =3D 92029292292=0D
telnet =3D 447-1454=0D
boss =3D John=0D
boss =3D Mary=0D
boss =3D Dick=0D
=0D
=0D
[interests]=0D
# you can add more to a group latter and=0D
# it acts just as if you had defined them=0D
# all in a single group.=0D
interest =3D perl=0D
interest =3D corba=0D
interest =3D food=0D
interest =3D python=0D
=0D
=0D
# Note: The formatting above is for human content=0D
# the parser doese not care. As a matter of fact=0D
# it just throws away all the leading and trailing=0D
# spaces as well as the comments.=0D
#=0D
# Note: We use INI files to directly tie values to =0D
# program variables in a larger system. In order=0D
# to make things as easy as possible on the programmer=0D
# it is generally polite to keep make the group names=0D
# and item names as valid python / perl variable names=0D
# this will minimize the amount of work required to=0D
# use them heavily in a larger system.=0D
=0D
=0D
--openmail-part-0fa27ddb-00000001
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