RDFlib

RDFLib is a pure Python package work working with RDF. RDFLib contains most things you need to work with RDF, including:

• parsers and serializers for RDF/XML, N3, NTriples, N-Quads, Turtle, TriX, Trig and JSON-LD (via a plugin).
• a Graph interface which can be backed by any one of a number of Store implementations
• store implementations for in-memory storage and persistent storage on top of the Berkeley DB
• a SPARQL 1.1 implementation - supporting SPARQL 1.1 Queries and Update statements

RDFlib Family of packages

The RDFlib community maintains many RDF-related Python code repositories with different purposes. Most of the currently operating packages are shown in Figure 1.

Figure 1: Packages within the RDFlib family.

• Core:
  • rdflib - the rdflib core
• Parsers/Serializers:
  • rdflib-jsonld - an rdflib plugin that is an implementation of JSON-LD
  • pymicrodata - This a module to extract RDF from an HTML5 page annotated with microdata
  • pyrdfa3 - RDFa 1.1 distiller/parser library: can extract RDFa 1.1 (and RDFa 1.0, if properly set via a @Version attribute) from (X)HTML, SVG, or XML
• Stores:
  • rdflib-hdt - A Store back-end for rdflib to allow for reading and querying HDT documents
  • rdflib-zodb - RDFLib Store backed by ZODB3
  • rdflib-kyotocabinet - RDFLib Store backed by Kyoto Cabinet
  • rdflib-leveldb - A LevelDB based Store for rdflib
  • rdflib-sqlalchemy - RDFLib store using SQLAlchemy dbapi as back-end
• SPARQL tools:
  • sparqlwrapper - a simple Python wrapper around a SPARQL service to remotely execute your queries
• OWL Reasoning & Documentation:
  • OWL-RL - A simple implementation of the OWL2 RL Profile on top of RDFLib
  • pyLODE - An OWL ontology documentation tool using Python and templating, based on LODE.
• SHACL validation:
  • pySHACL - A Python validator for SHACL
• Linked Data APIs:
  • pyLDAPI - A very small module to add Linked Data API functionality to a Python Flask installation
• Derived tools:
  • VocPrez - A tool (API and web front-end), based on pyLDAPI, for the read-only delivery system of SKOS vocabularies.

Please see the list of all packages here:

• https://github.com/RDFLib

Documentation

See https://rdflib.readthedocs.io for our documentation built from the code.

Support

For general “how do I…” queries, please use https://stackoverflow.com and tag your question with rdflib. Existing questions:

• https://stackoverflow.com/questions/tagged/rdflib

Releases

rdflib 5.0.0 has just been released and 6.0.0 is now being word on - April 2020.

Release	Date	Note
6.0.0	29 Jun 2020 (expected)	This will include major breaking changes such as no support for Python 2 or 3.4, Python 3.5+ only
5.0.0	18 Apr 2020	Current stable release. Release of master contents as of 18 Apr 2020 Last release with Python 2 & 3.4 support Documentation: readthedocs/latest
5.0.0RC1	04 Apr 2020	This was a pre-release of all changes in master as of 04 Apr 2020
4.2.2	30 Jan 2017	Previous stable release. Documentation: readthedocs/4.2.2
…	…	…
1.1.1	12 Nov 2002	First release!

Contributing

rdflib survives and grows via user contributions! Please consider lodging Pull Requests here:

• https://github.com/RDFLib/rdflib/pulls

You can also raise issues here:

• https://github.com/RDFLib/rdflib/issues

Contacts

If you want to contact the rdflib maintainers, please do so via the rdflib-dev mailing list:

• https://groups.google.com/group/rdflib-dev

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