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RDFLib
======
RDFLib is a Python library for working with RDF, a simple yet
powerful language for representing information as graphs.
RDFLib may be installed with setuptools (easy_install) or pip::
$ easy_install rdflib
or
$ pip install rdflib
Alternatively manually download the package from the Python Package
Index (PyPI) at https://pypi.python.org/pypi/rdflib
The current version of RDFLib is 4.2.1, see the ``CHANGELOG.md``
file for what's new.
Getting Started
---------------
RDFLib aims to be a pythonic RDF API, a Graph is a python collection
of RDF Subject,Predicate,Object Triples:
```python
import rdflib
g=rdflib.Graph()
g.load('http://dbpedia.org/resource/Semantic_Web')
for s,p,o in g:
print s,p,o
```
The components of the triples are URIs (resources) or Literals
(values), URIs are grouped together by *namespace*, common namespaces are
included in RDFLib:
```python
semweb=rdflib.URIRef('http://dbpedia.org/resource/Semantic_Web')
type=g.value(semweb, rdflib.RDFS.label)
```
Where `rdflib.RDFS` is the RDFS Namespace, `graph.value` returns an
object of the triple-pattern given (or an arbitrary one if more
exist). New Namespaces can also be defined:
```python
dbpedia=Namespace('http://dbpedia.org/ontology/')
abstracts=list(x for x in g.objects(semweb, dbpedia['abstract']) if x.language=='en')
```
See also *./examples*
Features
--------
The library contains parsers and serializers for RDF/XML, N3,
NTriples, N-Quads, Turtle, TriX, RDFa and Microdata.
The library presents a Graph interface which can be backed by
any one of a number of Store implementations.
This core RDFLib package includes store implementations for
in memory storage and persistent storage on top of the Berkeley DB.
A SPARQL 1.1 implementation is included - supporting SPARQL 1.1 Queries and Update statements.
RDFLib is open source and is maintained on [GitHub](http://github.com/RDFLib/rdflib/). RDFLib releases, current and previous
are listed on [PyPI](http://pypi.python.org/pypi/rdflib/)
RDFLib has a plugin-architecture for store-implementation, as well as parsers/serializers, several other projects exist which extend RDFLib features:
* [rdflib-json](https://github.com/RDFLib/rdflib-jsonld) - Serializer and parser for [json-ld](http://json-ld.org)
Support
-------
More information is available on the project webpage:
https://github.com/RDFLib/rdflib/
Continuous integration status details available from travis.ci, test coverage from coveralls:
[](https://travis-ci.org/RDFLib/rdflib)
[](https://coveralls.io/r/RDFLib/rdflib?branch=master)
The documentation can be built by doing::
$ python setup.py build_sphinx
And is also available from ReadTheDocs:
http://rdflib.readthedocs.org
Support is available through the rdflib-dev group:
http://groups.google.com/group/rdflib-dev
and on the IRC channel #rdflib on the freenode.net server
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