rdflib
RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information.
Science Score: 77.0%
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Repository
RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information.
Basic Info
- Host: GitHub
- Owner: RDFLib
- License: bsd-3-clause
- Language: Python
- Default Branch: main
- Homepage: https://rdflib.readthedocs.org
- Size: 22.4 MB
Statistics
- Stars: 2,323
- Watchers: 80
- Forks: 577
- Open Issues: 345
- Releases: 17
Topics
Metadata Files
README.md

RDFLib
RDFLib is a pure Python package for 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
- a Graph interface which can be backed by any one of a number of Store implementations
- store implementations for in-memory, persistent on disk (Berkeley DB) and remote SPARQL endpoints
- a SPARQL 1.1 implementation - supporting SPARQL 1.1 Queries and Update statements
- SPARQL function extension mechanisms
RDFlib Family of packages
The RDFlib community maintains many RDF-related Python code repositories with different purposes. For example:
- rdflib - the RDFLib core
- sparqlwrapper - a simple Python wrapper around a SPARQL service to remotely execute your queries
- pyLODE - An OWL ontology documentation tool using Python and templating, based on LODE.
- pyrdfa3 - RDFa 1.1 distiller/parser library: can extract RDFa 1.1/1.0 from (X)HTML, SVG, or XML in general.
- pymicrodata - A module to extract RDF from an HTML5 page annotated with microdata.
- pySHACL - A pure Python module which allows for the validation of RDF graphs against SHACL graphs.
- OWL-RL - A simple implementation of the OWL2 RL Profile which expands the graph with all possible triples that OWL RL defines.
Please see the list for all packages/repositories here:
Help with maintenance of all of the RDFLib family of packages is always welcome and appreciated.
Versions & Releases
mainbranch in this repository is the current unstable release - version 8 alpha7.1.4tidy-up release, possibly last 7.x release7.1.2current stable release, small improvements on to 7.1.17.1.1previous stable release6.x.ysupports Python 3.7+ only. Many improvements over 5.0.05.x.ysupports Python 2.7 and 3.4+ and is mostly backwards compatible with 4.2.2.
See https://github.com/RDFLib/rdflib/releases/ for the release details.
Documentation
See https://rdflib.readthedocs.io for our documentation built from the code. Note that there are latest, stable and versioned builds, such as 5.0.0, matching releases.
Installation
The stable release of RDFLib may be installed with Python's package management tool pip:
$ pip install rdflib
Some features of RDFLib require optional dependencies which may be installed using pip extras:
$ pip install rdflib[berkeleydb,networkx,html,lxml,orjson]
Alternatively manually download the package from the Python Package Index (PyPI) at https://pypi.python.org/pypi/rdflib
The current version of RDFLib is 7.1.2, see the CHANGELOG.md file for what's new in this release.
Installation of the current main branch (for developers)
With pip you can also install rdflib from the git repository with one of the following options:
$ pip install git+https://github.com/rdflib/rdflib@main
or
$ pip install -e git+https://github.com/rdflib/rdflib@main#egg=rdflib
or from your locally cloned repository you can install it with one of the following options:
$ poetry install # installs into a poetry-managed venv
or
$ pip install -e .
Getting Started
RDFLib aims to be a pythonic RDF API. RDFLib's main data object is a Graph which is a Python collection
of RDF Subject, Predicate, Object Triples:
To create graph and load it with RDF data from DBPedia then print the results:
```python from rdflib import Graph g = Graph() g.parse('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
from rdflib.namespace import DC, DCTERMS, DOAP, FOAF, SKOS, OWL, RDF, RDFS, VOID, XMLNS, XSD
You can use them like this:
```python from rdflib import Graph, URIRef, Literal from rdflib.namespace import RDFS, XSD
g = Graph()
semweb = URIRef('http://dbpedia.org/resource/Semantic_Web')
type = g.value(semweb, RDFS.label)
``
WhereRDFSis the RDFS namespace,XSDthe XML Schema Datatypes namespace andg.value` returns an object of the triple-pattern given (or an arbitrary one if multiple exist).
Or like this, adding a triple to a graph g:
python
g.add((
URIRef("http://example.com/person/nick"),
FOAF.givenName,
Literal("Nick", datatype=XSD.string)
))
The triple (in n-triples notation) <http://example.com/person/nick> <http://xmlns.com/foaf/0.1/givenName> "Nick"^^<http://www.w3.org/2001/XMLSchema#string> .
is created where the property FOAF.givenName is the URI <http://xmlns.com/foaf/0.1/givenName> and XSD.string is the
URI <http://www.w3.org/2001/XMLSchema#string>.
You can bind namespaces to prefixes to shorten the URIs for RDF/XML, Turtle, N3, TriG, TriX & JSON-LD serializations:
python
g.bind("foaf", FOAF)
g.bind("xsd", XSD)
This will allow the n-triples triple above to be serialised like this:
python
print(g.serialize(format="turtle"))
With these results: ```turtle PREFIX foaf: http://xmlns.com/foaf/0.1/ PREFIX xsd: http://www.w3.org/2001/XMLSchema#
http://example.com/person/nick foaf:givenName "Nick"^^xsd:string . ```
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, JSON-LD, 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. RDFLib releases, current and previous are listed on PyPI
Multiple other projects are contained within the RDFlib "family", see https://github.com/RDFLib/.
Running tests
Running the tests on the host
Run the test suite with pytest.
shell
poetry install
poetry run pytest
Running test coverage on the host with coverage report
Run the test suite and generate a HTML coverage report with pytest and pytest-cov.
shell
poetry run pytest --cov
Viewing test coverage
Once tests have produced HTML output of the coverage report, view it by running:
shell
poetry run pytest --cov --cov-report term --cov-report html
python -m http.server --directory=htmlcov
Contributing
RDFLib survives and grows via user contributions! Please read our contributing guide and developers guide to get started. Please consider lodging Pull Requests here:
To get a development environment consider using Gitpod or Google Cloud Shell.
You can also raise issues here:
Support & Contacts
For general "how do I..." queries, please use https://stackoverflow.com and tag your question with rdflib.
Existing questions:
If you want to contact the rdflib maintainers, please do so via:
- the rdflib-dev mailing list: https://groups.google.com/group/rdflib-dev
- the chat, which is available at gitter or via matrix #RDFLib_rdflib:gitter.im
Owner
- Name: RDFlib
- Login: RDFLib
- Kind: organization
- Website: https://rdflib.dev
- Repositories: 38
- Profile: https://github.com/RDFLib
RDFlib, the GitHub organization, is a volunteer-maintained collection of Python tools for working with RDF data.
Citation (CITATION.cff)
cff-version: 1.2.0 message: "If you use this software, please cite it as below." authors: - family-names: "Krech" given-names: "Daniel" - family-names: "Grimnes" given-names: "Gunnar Aastrand" - family-names: "Higgins" given-names: "Graham" - family-names: "Car" given-names: "Nicholas" orcid: "https://orcid.org/0000-0002-8742-7730" - family-names: "Hees" given-names: "Jörn" orcid: "https://orcid.org/0000-0002-0084-8998" - family-names: "Aucamp" given-names: "Iwan" orcid: "https://orcid.org/0000-0002-7325-3231" - family-names: "Lindström" given-names: "Niklas" - family-names: "Arndt" given-names: "Natanael" orcid: "https://orcid.org/0000-0002-8130-8677" - family-names: "Sommer" given-names: "Ashley" orcid: "https://orcid.org/0000-0003-0590-0131" - family-names: "Chuc" given-names: "Edmond" orcid: "https://orcid.org/0000-0002-6047-9864" - family-names: "Herman" given-names: "Ivan" orcid: "https://orcid.org/0000-0003-0782-2704" - family-names: "Nelson" given-names: "Alex" - family-names: "McCusker" given-names: "Jamie" orcid: "https://orcid.org/0000-0003-1085-6059" - family-names: "Gillespie" given-names: "Tom" - family-names: "Kluyver" given-names: "Thomas" orcid: "https://orcid.org/0000-0003-4020-6364" - family-names: "Ludwig" given-names: "Florian" - family-names: "Champin" given-names: "Pierre-Antoine" orcid: "https://orcid.org/0000-0001-7046-4474" - family-names: "Watts" given-names: "Mark" - family-names: "Holzer" given-names: "Urs" - family-names: "Summers" given-names: "Ed" - family-names: "Morriss" given-names: "Whit" - family-names: "Winston" given-names: "Donny" - family-names: "Perttula" given-names: "Drew" - family-names: "Kovacevic" given-names: "Filip" orcid: "https://orcid.org/0000-0002-2854-0434" - family-names: "Chateauneu" given-names: "Remi" orcid: "https://orcid.org/0000-0002-7505-8149" - family-names: "Solbrig" given-names: "Harold" orcid: "https://orcid.org/0000-0002-5928-3071" - family-names: "Cogrel" given-names: "Benjamin" orcid: "https://orcid.org/0000-0002-7566-4077" - family-names: "Stuart" given-names: "Veyndan" title: "RDFLib" version: 7.1.2 date-released: 2025-01-10 url: "https://github.com/RDFLib/rdflib" doi: 10.5281/zenodo.6845245
GitHub Events
Total
- Create event: 167
- Commit comment event: 2
- Issues event: 67
- Release event: 5
- Watch event: 137
- Delete event: 143
- Issue comment event: 375
- Push event: 293
- Pull request event: 335
- Pull request review event: 57
- Pull request review comment event: 32
- Fork event: 34
Last Year
- Create event: 167
- Commit comment event: 2
- Issues event: 67
- Release event: 5
- Watch event: 137
- Delete event: 143
- Issue comment event: 375
- Push event: 293
- Pull request event: 335
- Pull request review event: 57
- Pull request review comment event: 32
- Fork event: 34
Committers
Last synced: 8 months ago
Top Committers
| Name | Commits | |
|---|---|---|
| Daniel Krech | e****n@e****m | 842 |
| Gunnar Aastrand Grimnes | g****l@g****m | 493 |
| Chimezie Ogbuji | d****l@l****t | 364 |
| Iwan Aucamp | a****a@g****m | 354 |
| Graham Higgins | g****h@b****m | 337 |
| dependabot[bot] | 4****] | 286 |
| Nicholas Car | n****r@s****m | 265 |
| Jörn Hees | d****v@j****e | 234 |
| Niklas Lindström | l****m@g****m | 90 |
| Ashley Sommer | a****r@g****m | 76 |
| Natanael Arndt | a****n@g****m | 60 |
| Edmond Chuc | e****c@g****m | 59 |
| Alex Nelson | a****n@n****v | 43 |
| Michel Pelletier | m****l@g****m | 41 |
| Ivan Herman | i****n@i****t | 41 |
| Jamie McCusker | m****r@g****m | 33 |
| Tom Gillespie | t****s@g****m | 30 |
| Thomas Kluyver | t****l@g****m | 25 |
| pre-commit-ci[bot] | 6****] | 23 |
| Florian Ludwig | f****g@g****m | 23 |
| Mark Watts | w****5@g****m | 20 |
| Pierre-Antoine Champin | p****n@l****r | 20 |
| Ed Summers | e****s@p****m | 17 |
| Whit Morriss | d****s@g****m | 17 |
| Drew Perttula | d****p@b****m | 16 |
| Urs Holzer | u****s@a****m | 16 |
| dependabot-preview[bot] | 2****] | 15 |
| Filip Kovacevic | g****7@g****m | 14 |
| Donny Winston | d****n@a****u | 14 |
| Harold Solbrig | s****g@e****t | 13 |
| and 171 more... | ||
Committer Domains (Top 20 + Academic)
Issues and Pull Requests
Last synced: 4 months ago
All Time
- Total issues: 252
- Total pull requests: 976
- Average time to close issues: 9 months
- Average time to close pull requests: 16 days
- Total issue authors: 139
- Total pull request authors: 74
- Average comments per issue: 2.5
- Average comments per pull request: 1.45
- Merged pull requests: 590
- Bot issues: 5
- Bot pull requests: 566
Past Year
- Issues: 63
- Pull requests: 356
- Average time to close issues: 8 days
- Average time to close pull requests: 8 days
- Issue authors: 43
- Pull request authors: 32
- Average comments per issue: 0.22
- Average comments per pull request: 0.96
- Merged pull requests: 171
- Bot issues: 4
- Bot pull requests: 209
Top Authors
Issue Authors
- aucampia (37)
- ashleysommer (9)
- edmondchuc (8)
- ajnelson-nist (8)
- lu-pl (6)
- WhiteGobo (6)
- dependabot[bot] (5)
- floresbakker (5)
- multimeric (5)
- sdasda7777 (5)
- gjhiggins (3)
- william-vw (3)
- jclerman (3)
- jaw111 (3)
- kloczek (3)
Pull Request Authors
- dependabot[bot] (544)
- aucampia (95)
- ashleysommer (53)
- nicholascar (48)
- edmondchuc (30)
- pre-commit-ci[bot] (22)
- WhiteGobo (14)
- wallberg (12)
- white-gecko (10)
- ajnelson-nist (7)
- avillar (7)
- ageorgou (7)
- mgberg (6)
- raboof (6)
- recalcitrantsupplant (5)
Top Labels
Issue Labels
Pull Request Labels
Packages
- Total packages: 8
-
Total downloads:
- pypi 5,830,856 last-month
- Total docker downloads: 77,978,175
-
Total dependent packages: 501
(may contain duplicates) -
Total dependent repositories: 4,378
(may contain duplicates) - Total versions: 59
- Total maintainers: 5
pypi.org: rdflib
RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information.
- Homepage: https://github.com/RDFLib/rdflib
- Documentation: https://rdflib.readthedocs.org/
- License: BSD-3-Clause
-
Latest release: 7.1.4
published 9 months ago
Rankings
Maintainers (4)
spack.io: py-rdflib
RDFLib is a pure Python package for 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
- Homepage: https://github.com/RDFLib/rdflib
- License: []
-
Latest release: 7.0.0
published almost 2 years ago
Rankings
Maintainers (1)
conda-forge.org: rdflib
- Homepage: https://github.com/RDFLib/rdflib
- License: BSD-3-Clause
-
Latest release: 6.2.0
published over 3 years ago
Rankings
anaconda.org: rdflib-with-all
RDFLib is a pure Python package for 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 a Graph interface which can be backed by any one of a number of Store implementations store implementations for in-memory, persistent on disk (Berkeley DB) and remote SPARQL endpoints a SPARQL 1.1 implementation - supporting SPARQL 1.1 Queries and Update statements SPARQL function extension mechanisms
- Homepage: https://github.com/RDFLib/rdflib
- License: BSD-3-Clause
- Status: removed
-
Latest release: 7.1.4
published 4 months ago
Rankings
anaconda.org: rdflib-with-orjson
RDFLib is a pure Python package for 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 a Graph interface which can be backed by any one of a number of Store implementations store implementations for in-memory, persistent on disk (Berkeley DB) and remote SPARQL endpoints a SPARQL 1.1 implementation - supporting SPARQL 1.1 Queries and Update statements SPARQL function extension mechanisms
- Homepage: https://github.com/RDFLib/rdflib
- License: BSD-3-Clause
- Status: removed
-
Latest release: 7.1.4
published 4 months ago
Rankings
anaconda.org: rdflib
RDFLib is a pure Python package for 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 a Graph interface which can be backed by any one of a number of Store implementations store implementations for in-memory, persistent on disk (Berkeley DB) and remote SPARQL endpoints a SPARQL 1.1 implementation - supporting SPARQL 1.1 Queries and Update statements SPARQL function extension mechanisms
- Homepage: https://github.com/RDFLib/rdflib
- License: BSD-3-Clause
- Status: removed
-
Latest release: 7.1.4
published 4 months ago
Rankings
anaconda.org: rdflib-with-lxml
RDFLib is a pure Python package for 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 a Graph interface which can be backed by any one of a number of Store implementations store implementations for in-memory, persistent on disk (Berkeley DB) and remote SPARQL endpoints a SPARQL 1.1 implementation - supporting SPARQL 1.1 Queries and Update statements SPARQL function extension mechanisms
- Homepage: https://github.com/RDFLib/rdflib
- License: BSD-3-Clause
- Status: removed
-
Latest release: 7.1.4
published 4 months ago
Rankings
anaconda.org: rdflib-with-networkx
RDFLib is a pure Python package for 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 a Graph interface which can be backed by any one of a number of Store implementations store implementations for in-memory, persistent on disk (Berkeley DB) and remote SPARQL endpoints a SPARQL 1.1 implementation - supporting SPARQL 1.1 Queries and Update statements SPARQL function extension mechanisms
- Homepage: https://github.com/RDFLib/rdflib
- License: BSD-3-Clause
- Status: removed
-
Latest release: 7.1.4
published 4 months ago
Rankings
Dependencies
- myst-parser *
- sphinx <6
- sphinx-autodoc-typehints *
- sphinxcontrib-apidoc *
- sphinxcontrib-kroki *
- berkeleydb *
- networkx *
- black ==22.6.0
- coverage *
- doctest-ignore-unicode ==0.1.2
- html5lib *
- isort *
- mypy *
- pytest *
- pytest-cov *
- types-setuptools *
- flake8 *
- flakeheaven *
- pep8-naming *
- html5lib *
- isodate *
- pyparsing *
- actions/checkout v3 composite
- arduino/setup-task v1 composite
- docker/login-action v2 composite
- dorny/test-reporter v1 composite
- actions/cache v3 composite
- actions/checkout v3 composite
- actions/setup-java v3 composite
- actions/setup-python v4 composite
- actions/upload-artifact v3 composite
- arduino/setup-task v1 composite
- coverallsapp/github-action master composite
- docker.io/library/python 3.11.1-slim@sha256 build
- docker.io/library/python 3.11.1-slim@sha256 build
- html5lib * test
- rdflib ==6.2.0 test
- html5lib ==1.1 test
- isodate ==0.6.1 test
- pyparsing ==3.0.9 test
- rdflib ==6.2.0 test
- six ==1.16.0 test
- webencodings ==0.5.1 test
- html5lib ==1.1
- isodate ==0.6.1
- pyparsing ==3.0.9
- six ==1.16.0
- webencodings ==0.5.1