RDFLib Test.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import rdflib"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "g = rdflib.Graph()\n",
    "result = g.parse(\"http://www.w3.org/People/Berners-Lee/card\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<Graph identifier=Nd79fa3b4390a4bcfa78f44de4e02179c (<class 'rdflib.graph.Graph'>)>"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "result"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "graph has 87 statements.\n"
     ]
    }
   ],
   "source": [
    "print(\"graph has %s statements.\" % len(g))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [],
   "source": [
    "for subj, pred, obj in g:\n",
    "   if (subj, pred, obj) not in g:\n",
    "       raise Exception(\"It better be!\")\n",
    "s = g.serialize(format='n3')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "An extensive example"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [],
   "source": [
    "from rdflib import Graph, Literal, BNode, Namespace, RDF, URIRef\n",
    "from rdflib.namespace import DC, FOAF\n",
    "g = Graph()\n",
    "donna = BNode()\n",
    "g.add( (donna, RDF.type, FOAF.Person) )\n",
    "g.add( (donna, FOAF.nick, Literal(\"donna\", lang=\"foo\")) )\n",
    "g.add( (donna, FOAF.name, Literal(\"Donna Fales\")) )\n",
    "g.add( (donna, FOAF.mbox, URIRef(\"mailto:donna@example.org\")) )\n",
    "\n",
    "# Every statment adds another property to the whole graph."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "--- printing raw triples ---\n",
      "(rdflib.term.BNode('N5e650cfe61664bcb82bb9165289689b1'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/name'), rdflib.term.Literal('Donna Fales'))\n",
      "(rdflib.term.BNode('N5e650cfe61664bcb82bb9165289689b1'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/nick'), rdflib.term.Literal('donna', lang='foo'))\n",
      "(rdflib.term.BNode('N5e650cfe61664bcb82bb9165289689b1'), rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/Person'))\n",
      "(rdflib.term.BNode('N5e650cfe61664bcb82bb9165289689b1'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/mbox'), rdflib.term.URIRef('mailto:donna@example.org'))\n"
     ]
    }
   ],
   "source": [
    "print(\"--- printing raw triples ---\")\n",
    "for s, p, o in g:\n",
    "    print((s, p, o))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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