Changes since Amara 1.0:
Amara XML Toolkit is a collection of Python tools for XML processing-- not just tools that happen to be written in Python, but tools built from the ground up to use Python idioms and take advantage of the many advantages of Python.
Amara builds on 4Suite [http://4Suite.org], but whereas 4Suite focuses more on literal implementation of XML standards in Python, Amara focuses on Pythonic idiom. It provides tools you can trust to conform with XML standards without losing the familiar Python feel.
The components of Amara are:
XML; converts Schematron files to Python scripts
There's a lot in Amara, but here are highlights:
Bindery turns an XML document into a tree of Python objects corresponding to the vocabulary used in the XML document, for maximum clarity. For example, the document<monty> <python spam="eggs">What do you mean "bleh"</python> <python ministry="abuse">But I was looking for argument</python> </monty>
Becomes a data structure such that you can write
In order to get the value "eggs" or
In order to get the value "But I was looking for argument".
There are other such tools for Python, and what makes Anobind unique is that it's driven by a very declarative rules-based system for binding XML to the Python data. You can register rules that are triggered by XPattern expressions specialized binding behavior. It includes XPath support and supports mutation. Bindery is very efficient, using SAX to generate bindings.
Merged in from a separate project, Scimitar is an implementation of ISO Schematron that compiles a Schematron schema into a Python validator script.
You typically use scimitar in two phases. Say you have a schematron schema schema1.stron and you want to validate multiple XML files against it, instance1.xml, instance2.xml, instance3.xml.
First you run schema1.stron through the scimitar compiler script, scimitar.py:
The generated file, schema1.py, can be used to validate XML instances:
python schema1.py instance1.xml
Which emits a validation report.
DOM came from the Java world, hardly the most Pythonic API possible. Some DOM-like implementations such as 4Suite's Domlettes mix in some Pythonic idiom. Amara DOM Tools goes even further.
Amara DOM Tools feature pushdom, similar to xml.dom.pulldom, but easier to use. It also includes Python generator-based tools for DOM processing, and a function to return an XPath location for any DOM node.
Tenorsax (amara.saxtools.tenorsax) is a framework for "linerarizing" SAX logic so that it flows more naturally, and needs a lot less state machine wizardry.
Amara is open source, provided under the 4Suite variant of the Apache license. See the file COPYING for details.
Amara 1.1.6 requires Python 2.4 or more recent. If you do not have 4Suite XML 1.0b2, grab the Amara-allinone package. If you already have 4Suite XML installed, grab the stand along Amara package. In either case, unpack to a convenient location and run:
python setup.py install