pyDatalog

a datalog implementation in Python

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3Distinct people

3Mentions

0Explicit recommenders

328GitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

a datalog implementation in Python

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year3 dated mentions

Observed mentions: 2019-03-19 04:21:43 UTC to 2025-08-12 20:53:53 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2019	2019-01-01 00:00:00 UTC	2020-01-01 00:00:00 UTC	1	1
2020	2020-01-01 00:00:00 UTC	2021-01-01 00:00:00 UTC	0	0
2021	2021-01-01 00:00:00 UTC	2022-01-01 00:00:00 UTC	0	0
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	0	0
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	1	1
2024	2024-01-01 00:00:00 UTC	2025-01-01 00:00:00 UTC	0	0
2025	2025-01-01 00:00:00 UTC	2026-01-01 00:00:00 UTC	1	1

What Hacker News says

3 sources

Qem·Aug 12, 2025

> Datalog/Prolog as a sub-language > And I’d like to be able to call into this pure declarative logic from an imperative shell that handles all the messy stuff. Is that too much to ask? There is at least one pure Python implementation of Datalog sitting on PIP, pyDatalog[1][2]. It's not part of the standard library, but it's one PIP install and one import away. So this item is one of the lowest hanging fruit in the wishlist, at least for Python. [1] https://github.com/pcarbonn/pyDatalog [2] https://pypi.org/project/pyDatalog

In A few programming language features I'd like to see (2023)

westurner·Feb 15, 2023

With RDF* and SPARQL* ("RDF-star" and "SPARQL-star") how are triple (or quad) stores still distinct from property graphs? RDFS and SHACL (and OWL) are optional in a triple store, which expects the subject and predicate to be string URIs, and there is an object datatype and optional language: (?s ?p ?o <datatype> [lang]) (?subject:URI, ?predicate:URI, ?object:datatype, object_datatype, [object_language]) RDFS introduces rdfs:domain and rdfs:range type restrictions for Properties, and rdfs:Class and rdfs:subClassOf. `a` means `rdf:type`; which does not require RDFS: ("#xyz", a, "https://schema.org/Thing") ("#xyz", rdf:type, "https://schema.org/Thing") Quad stores have a graph_id string URI "?g" for Named Graphs: (?g ?s ?p ?o) ("https://example.org/ns/graphs/0", "#xyz", a, "https://schema.org/Thing") ("https://examp

Read the rest

le.org/ns/graphs/1", "#xyz", a, "https://schema.org/ScholarlyArticle") There's a W3C CG (Community Group) revising very many of the W3C Linked Data specs to support RDF-star: https://www.w3.org/groups/wg/rdf-star Looks like they ended up needing to update basically most of the current specs: https://www.w3.org/groups/wg/rdf-star/tools "RDF-star and SPARQL-star" (Draft Community Group Report; 08 December 2022) https://w3c.github.io/rdf-star/cg-spec/editors_draft.html GH topics: rdf-star, rdfstar: https://github.com/topics/rdf-star, https://github.com/topics/rdfstar pyDatalog does datalog with SQLAlchemy and e.g. just the SQLite database: https://github.com/pcarbonn/pyDatalog ; and it is apparently superseded by IDP-Z3: https://gitlab.com/krr/IDP-Z3/ From https://twitter.com/westurner/status/1000516851984723968 : > A feature comparison of SQL w/ EAV, SPARQL/SPARUL, [SPARQL12 SPARQL-star, [T-SPARQL, SPARQLMT,]], Cypher, Gremlin, GraphQL, and Datalog would be a useful resource for evaluating graph query languages. > I'd probably use unstructured text search to identify the relevant resources first.

In Introduction to Datalog

bobjordan·Mar 19, 2019

Sharing an interesting implementation in python which I stumbled upon yesterday. Repo: https://github.com/pcarbonn/pyDatalog Tutorial: https://sites.google.com/site/pydatalog/Online-datalog-tutor...

In Introduction to Datalog