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lxml - a sane Python wrapper for libxml
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Martijn Faassen, Infrae
faassen@infrae.com
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The C library libxml has huge benefits
Standards-compliant XML support
full-featured
actively maintained by XML exports
fast. fast! FAST!
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Features of libxml
Parsing
Tree based (DOM-ish) XML structure
XPath support
XSLT support (libxslt)
Relax NG (schema) support
And more
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But libxml already has Python bindings!
very low level and C-ish (not Pythonic)
underdocumented. huge, you get lost in them
works with UTF-8, not native Python unicode
can cause segfaults from Python
have to do manual memory management!
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lxml is a new Python binding for libxml
Aims (read: TODOS)
Pythonic API
Documented
Use Python unicode strings in API
Safe (no segfaults)
No manual memory management!
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Tradeoffs
Slower because of better wrapping.
But libxml is so fast this likely doesn't matter much.
Not all features of libxml exposed (unless you help)
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What is there now - Proof of concept
Automatic destruction of documents (refcounted)
Start of ElementTree style API for tree
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Future
Fix bugs, add features
Moving into svn repository on codespeak.net
Help!