Exercises, examples and other material relating to training module Y151. This topic is presented on public courses Learning to program in Python
, Python Programming
, Intermediate Python
An XML document is a structured piece of data, held as a piece of text. Python can be used to process XML data, a subject which is covered in this module.
|Articles and tips on this subject||updated|
|3082||XML handling in Python - SAX, DOM and XSLT examples|
XML is the "eXtensible Markup Language" ... a set of rules to which a language must adhere, rather than a complete language definition - you need to add other elements such as a DTD or Schema to complete the definition of a language that conforms to an XML standard.
How do you process XML, then?
It's incredible just how much time bookkeeping takes - small adjustments to the various resources we have, tidying up modules that are no longer relevant and pointing any visitors at replacements. There' been a lot of that going on over the last couple of days ... for example:
1. I have deleted two ...
|2506||Good example of recursion in Python - analyse an RSS feed|
I'm not keen on recursive code - code that calls itself. Very often, such code is elegant in a way, yet so 'clever' that it is hard to follow. There are, however, exceptions where I say "THAT is a good use of recursion". Once such is in the handling / parsing of RSS (Really Simple Syndication) feeds.
|2378||Handling XML in Perl - introduction and early examples|
There are hundreds of modules (literally) in Perl for handing XML. Some of them are highly specialised, but others are of much more general use in reading (and in some cases writing) XML streams.
(definition of XML: Extended Markup Language - a tagging system in plain text for marking up data; not ...
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Topics covered in this module
What is XML.
Using Python to handle XML via SAX.
Accessing attributes and character data via Python and SAX.
Storing information as you parse with SAX.
Using Python to handle XML via DOM.
Adding in a character handler.
Modifying and saving the model.
The Gnome libraries.
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