Graph databases and RDF triplestores: storage of graph data in python

Question

I need to develop a graph database in python (I would enjoy if anybody can join me in the development. I already have a bit of code, but I would gladly discuss about it).

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Answer 1

RDFLib is a python library that you can use. Using harschware's example:

Create a test.nt file like below:

   .
   .

To query for all nodes two hops from node 1 in RDFLib:

    from rdflib import Graph

    g = Graph()
    g.parse("test.nt", format="nt")

    qres = g.query(
        """SELECT ?node
        WHERE {
             ?p1 ?o1 .
            ?o1 ?p2 ?node .
        }"""
    )

    for row in qres:
        print(node)

Should return the answer .