8.9. Generalizing the Idea of Event-Based XML Processing
The event-based programming style has a long history in the field of structured document processing. Long before XML came into existence, it was a common approach to HTML processing. Python's HTML processing library, htmllib, takes an event-driven approach.
Long before HTML, the event-driven style was a common approach to SGML processing. In fact, a number of programming languages such as OmniMark and Balise have been created specifically to support the event-driven structured SGML-processing paradigm. General-purpose scripting languages such as Perl, Tcl, and indeed Python are also often used with SGML, typically using James Clark's sgmls and nsgmls parsers as event sources.[1]
[1] In my ...
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