Ivan Herman, $Date: 31-12-2005 - 16:47$ ivan@ivan-herman.net
Unless otherwise noted, these works are licensed under a Creative Commons License.
One of the languages I use for programming in Python. As (I presume) everybody using a
particular language, I have also piled up some Python modules that I use for
various projects. These are listed here and you can download and use them if
you want. None of those are production quality in my view, but they
can be useful. A word of warning: my environment is Windows XP and I use
Python from under cygwin. There might be dependencies that I do not know
about (although I tried to develop the scripts in a portable manner). If you
hit such a problem (or any other) I would welcome your feedback. Some of the
modules are distributed as a gzipped tar or zip file, containing a more
detailed documentation. Others are simply a single Python file.
Here are some of these modules:
ElementNode class is some sort of a
wrapper around PyXML's implementation of a DOM Node, that
makes it a little bit easier to program with. (In other languages one
would call these macros.) Examples are: appendString
(creating a Text node and append it as a child node),
appendCDATA (similar), append an XML Fragment (parse an
XML string, and add the result as a child element), copy a full subtree
from another document into the node, etc. See separate documentation
for further details.myTripleStore is a wrapper around RDFLib's
TripleStore to make certain operations a bit easier. Just
as PyXMLUtils.py above, it is mostly a set of "macros":
getPredicateSubject (useful when one knows that there may
be only one?), unfolding Collections, operator methods to concatenate
and mutliply (ie, intersect) triple stores. It also contains the
management of a Seq: RDFLib does not ensure that an
iterator on the properties on a Seq (ie, _1,
_2, _3, etc) are returned in sequential
order, so I made a wrapper around that. The SPARQL part is an API
level implementation of the SPARQL Query draft of W3C. See separate documentation
for further details, with a separate description
of the SPARQL facilities.
However: these method and routines are getting out of date. The reason is that the newer releases of RDFLib incorporates most of this code: thanks to Michel Pelletier and Daniel Kresch, this SPARQL API has been included in the latest releases of RDFLib (2.2.2 and higher). See my note on the transition. (However, the version 2.2.2 still contains some bugs of the transition; hopefully, all this will be settled soon!).
TripleStore. There is also a method that takes a URI instead of a file name, and it would then
retrieve the XMP data over the network. Based on some tricky regular expressions
provided by Sean B. Palmer.