rdflib.plugins.parsers package

Submodules

rdflib.plugins.parsers.RDFVOC module

class rdflib.plugins.parsers.RDFVOC.RDFVOC[source]

Bases: RDF

Description: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#Description')
ID: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#ID')
RDF: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#RDF')
about: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#about')
datatype: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#datatype')
li: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#li')
nodeID: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#nodeID')
parseType: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#parseType')
resource: URIRef = rdflib.term.URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#resource')

rdflib.plugins.parsers.hext module

This is a rdflib plugin for parsing Hextuple files, which are Newline-Delimited JSON (ndjson) files, into Conjunctive. The store that backs the graph must be able to handle contexts, i.e. multiple graphs.

class rdflib.plugins.parsers.hext.HextuplesParser[source]

Bases: Parser

An RDFLib parser for Hextuples

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.hext', '__doc__': '\n    An RDFLib parser for Hextuples\n\n    ', '__init__': <function HextuplesParser.__init__>, '_load_json_line': <function HextuplesParser._load_json_line>, '_parse_hextuple': <function HextuplesParser._parse_hextuple>, 'parse': <function HextuplesParser.parse>, '__dict__': <attribute '__dict__' of 'HextuplesParser' objects>, '__weakref__': <attribute '__weakref__' of 'HextuplesParser' objects>, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.hext'
__weakref__

list of weak references to the object (if defined)

parse(source, graph, **kwargs)[source]
Parameters
Return type

None

rdflib.plugins.parsers.jsonld module

This parser will interpret a JSON-LD document as an RDF Graph. See:

Example usage:

>>> from rdflib import Graph, URIRef, Literal
>>> test_json = '''
... {
...     "@context": {
...         "dc": "http://purl.org/dc/terms/",
...         "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
...         "rdfs": "http://www.w3.org/2000/01/rdf-schema#"
...     },
...     "@id": "http://example.org/about",
...     "dc:title": {
...         "@language": "en",
...         "@value": "Someone's Homepage"
...     }
... }
... '''
>>> g = Graph().parse(data=test_json, format='json-ld')
>>> list(g) == [(URIRef('http://example.org/about'),
...     URIRef('http://purl.org/dc/terms/title'),
...     Literal("Someone's Homepage", lang='en'))]
True
class rdflib.plugins.parsers.jsonld.JsonLDParser[source]

Bases: Parser

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.jsonld', '__init__': <function JsonLDParser.__init__>, 'parse': <function JsonLDParser.parse>, '__dict__': <attribute '__dict__' of 'JsonLDParser' objects>, '__weakref__': <attribute '__weakref__' of 'JsonLDParser' objects>, '__doc__': None, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.jsonld'
__weakref__

list of weak references to the object (if defined)

parse(source, sink, **kwargs)[source]
Parameters
Return type

None

rdflib.plugins.parsers.jsonld.to_rdf(data, dataset, base=None, context_data=None, version=None, generalized_rdf=False, allow_lists_of_lists=None)[source]
Parameters

rdflib.plugins.parsers.notation3 module

notation3.py - Standalone Notation3 Parser Derived from CWM, the Closed World Machine

Authors of the original suite:

http://www.w3.org/2000/10/swap/notation3.py

Copyright 2000-2007, World Wide Web Consortium. Copyright 2001, MIT. Copyright 2001, Zolera Systems Inc.

License: W3C Software License http://www.w3.org/Consortium/Legal/copyright-software

Modified by Sean B. Palmer Copyright 2007, Sean B. Palmer.

Modified to work with rdflib by Gunnar Aastrand Grimnes Copyright 2010, Gunnar A. Grimnes

exception rdflib.plugins.parsers.notation3.BadSyntax(uri, lines, argstr, i, why)[source]

Bases: SyntaxError

Parameters
__init__(uri, lines, argstr, i, why)[source]
Parameters
__module__ = 'rdflib.plugins.parsers.notation3'
__str__()[source]

Return str(self).

Return type

str

__weakref__

list of weak references to the object (if defined)

property message: str
Return type

str

class rdflib.plugins.parsers.notation3.Formula(parent)[source]

Bases: object

Parameters

parent (Graph) –

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.notation3', 'number': 0, '__init__': <function Formula.__init__>, '__str__': <function Formula.__str__>, 'id': <function Formula.id>, 'newBlankNode': <function Formula.newBlankNode>, 'newUniversal': <function Formula.newUniversal>, 'declareExistential': <function Formula.declareExistential>, 'close': <function Formula.close>, '__dict__': <attribute '__dict__' of 'Formula' objects>, '__weakref__': <attribute '__weakref__' of 'Formula' objects>, '__doc__': None, '__annotations__': {'existentials': 'Dict[str, BNode]', 'universals': 'Dict[str, BNode]'}})
__init__(parent)[source]
Parameters

parent (Graph) –

__module__ = 'rdflib.plugins.parsers.notation3'
__str__()[source]

Return str(self).

Return type

str

__weakref__

list of weak references to the object (if defined)

close()[source]
Return type

QuotedGraph

declareExistential(x)[source]
Parameters

x (str) –

Return type

None

id()[source]
Return type

BNode

newBlankNode(uri=None, why=None)[source]
Parameters
Return type

BNode

newUniversal(uri, why=None)[source]
Parameters
Return type

Variable

number = 0
class rdflib.plugins.parsers.notation3.N3Parser[source]

Bases: TurtleParser

An RDFLib parser for Notation3

See http://www.w3.org/DesignIssues/Notation3.html

__init__()[source]
__module__ = 'rdflib.plugins.parsers.notation3'
parse(source, graph, encoding='utf-8')[source]
Parameters
Return type

None

class rdflib.plugins.parsers.notation3.RDFSink(graph)[source]

Bases: object

Parameters

graph (Graph) –

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.notation3', '__init__': <function RDFSink.__init__>, 'newFormula': <function RDFSink.newFormula>, 'newGraph': <function RDFSink.newGraph>, 'newSymbol': <function RDFSink.newSymbol>, 'newBlankNode': <function RDFSink.newBlankNode>, 'newLiteral': <function RDFSink.newLiteral>, 'newList': <function RDFSink.newList>, 'newSet': <function RDFSink.newSet>, 'setDefaultNamespace': <function RDFSink.setDefaultNamespace>, 'makeStatement': <function RDFSink.makeStatement>, 'normalise': <function RDFSink.normalise>, 'intern': <function RDFSink.intern>, 'bind': <function RDFSink.bind>, 'startDoc': <function RDFSink.startDoc>, 'endDoc': <function RDFSink.endDoc>, '__dict__': <attribute '__dict__' of 'RDFSink' objects>, '__weakref__': <attribute '__weakref__' of 'RDFSink' objects>, '__doc__': None, '__annotations__': {'rootFormula': 'Optional[Formula]'}})
__init__(graph)[source]
Parameters

graph (Graph) –

__module__ = 'rdflib.plugins.parsers.notation3'
__weakref__

list of weak references to the object (if defined)

bind(pfx, uri)[source]
Return type

None

endDoc(formula)[source]
Parameters

formula (Optional[Formula]) –

Return type

None

intern(something)[source]
Parameters

something (TypeVar(_AnyT)) –

Return type

TypeVar(_AnyT)

makeStatement(quadruple, why=None)[source]
Parameters
Return type

None

newBlankNode(arg=None, uri=None, why=None)[source]
Parameters
Return type

BNode

newFormula()[source]
Return type

Formula

newGraph(identifier)[source]
Parameters

identifier (Identifier) –

Return type

Graph

newList(n, f)[source]
Parameters
Return type

IdentifiedNode

newLiteral(s, dt, lang)[source]
Parameters
Return type

Literal

newSet(*args)[source]
Parameters

args (TypeVar(_AnyT)) –

Return type

Set[TypeVar(_AnyT)]

newSymbol(*args)[source]
Parameters

args (str) –

Return type

URIRef

normalise(f, n)[source]
Parameters
Return type

Union[URIRef, Literal, BNode, TypeVar(_AnyT)]

setDefaultNamespace(*args)[source]
Parameters

args (bytes) –

Return type

str

startDoc(formula)[source]
Parameters

formula (Optional[Formula]) –

Return type

None

class rdflib.plugins.parsers.notation3.SinkParser(store, openFormula=None, thisDoc='', baseURI=None, genPrefix='', why=None, turtle=False)[source]

Bases: object

Parameters
BadSyntax(argstr, i, msg)[source]
Parameters
Return type

NoReturn

UEscape(argstr, i, startline)[source]
Parameters

  • argstr (str) –

  • i (int) –

  • startline (int) –

Return type

Tuple[int, str]

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.notation3', '__init__': <function SinkParser.__init__>, 'here': <function SinkParser.here>, 'formula': <function SinkParser.formula>, 'loadStream': <function SinkParser.loadStream>, 'loadBuf': <function SinkParser.loadBuf>, 'feed': <function SinkParser.feed>, 'directiveOrStatement': <function SinkParser.directiveOrStatement>, 'tok': <function SinkParser.tok>, 'sparqlTok': <function SinkParser.sparqlTok>, 'directive': <function SinkParser.directive>, 'sparqlDirective': <function SinkParser.sparqlDirective>, 'bind': <function SinkParser.bind>, 'setKeywords': <function SinkParser.setKeywords>, 'startDoc': <function SinkParser.startDoc>, 'endDoc': <function SinkParser.endDoc>, 'makeStatement': <function SinkParser.makeStatement>, 'statement': <function SinkParser.statement>, 'subject': <function SinkParser.subject>, 'verb': <function SinkParser.verb>, 'prop': <function SinkParser.prop>, 'item': <function SinkParser.item>, 'blankNode': <function SinkParser.blankNode>, 'path': <function SinkParser.path>, 'anonymousNode': <function SinkParser.anonymousNode>, 'node': <function SinkParser.node>, 'property_list': <function SinkParser.property_list>, 'commaSeparatedList': <function SinkParser.commaSeparatedList>, 'objectList': <function SinkParser.objectList>, 'checkDot': <function SinkParser.checkDot>, 'uri_ref2': <function SinkParser.uri_ref2>, 'skipSpace': <function SinkParser.skipSpace>, 'variable': <function SinkParser.variable>, 'bareWord': <function SinkParser.bareWord>, 'qname': <function SinkParser.qname>, 'object': <function SinkParser.object>, 'nodeOrLiteral': <function SinkParser.nodeOrLiteral>, 'uriOf': <function SinkParser.uriOf>, 'strconst': <function SinkParser.strconst>, '_unicodeEscape': <function SinkParser._unicodeEscape>, 'uEscape': <function SinkParser.uEscape>, 'UEscape': <function SinkParser.UEscape>, 'BadSyntax': <function SinkParser.BadSyntax>, '__dict__': <attribute '__dict__' of 'SinkParser' objects>, '__weakref__': <attribute '__weakref__' of 'SinkParser' objects>, '__doc__': None, '__annotations__': {'_anonymousNodes': 'Dict[str, BNode]', '_variables': 'Dict[str, Variable]', '_parentVariables': 'Dict[str, Variable]', '_reason2': 'Optional[Callable[..., None]]', '_baseURI': 'Optional[str]', '_formula': 'Optional[Formula]', '_context': 'Optional[Formula]', '_parentContext': 'Optional[Formula]'}})
__init__(store, openFormula=None, thisDoc='', baseURI=None, genPrefix='', why=None, turtle=False)[source]

note: namespace names should not end in # ; the # will get added during qname processing

Parameters
__module__ = 'rdflib.plugins.parsers.notation3'
__weakref__

list of weak references to the object (if defined)

anonymousNode(ln)[source]

Remember or generate a term for one of these _: anonymous nodes

Parameters

ln (str) –

Return type

BNode

bareWord(argstr, i, res)[source]

abc -> :abc

Parameters
Return type

int

bind(qn, uri)[source]
Parameters
Return type

None

blankNode(uri=None)[source]
Parameters

uri (Optional[str]) –

Return type

BNode

checkDot(argstr, i)[source]
Parameters

  • argstr (str) –

  • i (int) –

Return type

int

commaSeparatedList(argstr, j, res, what)[source]

return value: -1 bad syntax; >1 new position in argstr res has things found appended

Parameters
Return type

int

directive(argstr, i)[source]
Parameters

  • argstr (str) –

  • i (int) –

Return type

int

directiveOrStatement(argstr, h)[source]
Parameters

  • argstr (str) –

  • h (int) –

Return type

int

endDoc()[source]

Signal end of document and stop parsing. returns formula

Return type

Optional[Formula]

feed(octets)[source]

Feed an octet stream to the parser

if BadSyntax is raised, the string passed in the exception object is the remainder after any statements have been parsed. So if there is more data to feed to the parser, it should be straightforward to recover.

Parameters

octets (Union[str, bytes]) –

Return type

None

formula()[source]
Return type

Optional[Formula]

here(i)[source]

String generated from position in file

This is for repeatability when referring people to bnodes in a document. This has diagnostic uses less formally, as it should point one to which bnode the arbitrary identifier actually is. It gives the line and character number of the ‘[’ charcacter or path character which introduced the blank node. The first blank node is boringly _L1C1. It used to be used only for tracking, but for tests in general it makes the canonical ordering of bnodes repeatable.

Parameters

i (int) –

Return type

str

item(argstr, i, res)[source]
Parameters
Return type

int

loadBuf(buf)[source]

Parses a buffer and returns its top level formula

Parameters

buf (Union[str, bytes]) –

Return type

Optional[Formula]

loadStream(stream)[source]
Parameters

stream (Union[IO[str], IO[bytes]]) –

Return type

Optional[Formula]

makeStatement(quadruple)[source]
Return type

None

node(argstr, i, res, subjectAlready=None)[source]

Parse the <node> production. Space is now skipped once at the beginning instead of in multiple calls to self.skipSpace().

Parameters
Return type

int

nodeOrLiteral(argstr, i, res)[source]
Parameters
Return type

int

object(argstr, i, res)[source]
Parameters
Return type

int

objectList(argstr, i, res)[source]
Parameters
Return type

int

path(argstr, i, res)[source]

Parse the path production.

Parameters
Return type

int

prop(argstr, i, res)[source]
Parameters
Return type

int

property_list(argstr, i, subj)[source]

Parse property list Leaves the terminating punctuation in the buffer

Parameters
Return type

int

qname(argstr, i, res)[source]

xyz:def -> (‘xyz’, ‘def’) If not in keywords and keywordsSet: def -> (‘’, ‘def’) :def -> (‘’, ‘def’)

Parameters
Return type

int

setKeywords(k)[source]

Takes a list of strings

Parameters

k (Optional[List[str]]) –

Return type

None

skipSpace(argstr, i)[source]

Skip white space, newlines and comments. return -1 if EOF, else position of first non-ws character

Parameters

  • argstr (str) –

  • i (int) –

Return type

int

sparqlDirective(argstr, i)[source]

turtle and trig support BASE/PREFIX without @ and without terminating .

Parameters

  • argstr (str) –

  • i (int) –

Return type

int

sparqlTok(tok, argstr, i)[source]

Check for SPARQL keyword. Space must have been stripped on entry and we must not be at end of file. Case insensitive and not preceded by @

Parameters
Return type

int

startDoc()[source]
Return type

None

statement(argstr, i)[source]
Parameters

  • argstr (str) –

  • i (int) –

Return type

int

strconst(argstr, i, delim)[source]

parse an N3 string constant delimited by delim. return index, val

Parameters

  • argstr (str) –

  • i (int) –

  • delim (str) –

Return type

Tuple[int, str]

subject(argstr, i, res)[source]
Parameters
Return type

int

tok(tok, argstr, i, colon=False)[source]

Check for keyword. Space must have been stripped on entry and we must not be at end of file.

if colon, then keyword followed by colon is ok (@prefix:<blah> is ok, rdf:type shortcut a must be followed by ws)

Parameters
Return type

int

uEscape(argstr, i, startline)[source]
Parameters

  • argstr (str) –

  • i (int) –

  • startline (int) –

Return type

Tuple[int, str]

uriOf(sym)[source]
Parameters

sym (Union[Identifier, Tuple[str, str]]) –

Return type

str

uri_ref2(argstr, i, res)[source]

Generate uri from n3 representation.

Note that the RDF convention of directly concatenating NS and local name is now used though I prefer inserting a ‘#’ to make the namesapces look more like what XML folks expect.

Parameters
Return type

int

variable(argstr, i, res)[source]

?abc -> variable(:abc)

Parameters

  • argstr (str) –

  • i (int) –

Return type

int

verb(argstr, i, res)[source]

has _prop_ is _prop_ of a = _prop_ >- prop -> <- prop -< _operator_

Parameters
Return type

int

class rdflib.plugins.parsers.notation3.TurtleParser[source]

Bases: Parser

An RDFLib parser for Turtle

See http://www.w3.org/TR/turtle/

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.notation3', '__doc__': '\n    An RDFLib parser for Turtle\n\n    See http://www.w3.org/TR/turtle/\n    ', '__init__': <function TurtleParser.__init__>, 'parse': <function TurtleParser.parse>, '__dict__': <attribute '__dict__' of 'TurtleParser' objects>, '__weakref__': <attribute '__weakref__' of 'TurtleParser' objects>, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.notation3'
__weakref__

list of weak references to the object (if defined)

parse(source, graph, encoding='utf-8', turtle=True)[source]
Parameters
Return type

None

rdflib.plugins.parsers.notation3.base()[source]

The base URI for this process - the Web equiv of cwd

Relative or absolute unix-standard filenames parsed relative to this yield the URI of the file. If we had a reliable way of getting a computer name, we should put it in the hostname just to prevent ambiguity

Return type

str

rdflib.plugins.parsers.notation3.hexify(ustr)[source]

Use URL encoding to return an ASCII string corresponding to the given UTF8 string

>>> hexify("http://example/a b")
b'http://example/a%20b'
Parameters

ustr (str) –

Return type

bytes

rdflib.plugins.parsers.notation3.join(here, there)[source]

join an absolute URI and URI reference (non-ascii characters are supported/doctested; haven’t checked the details of the IRI spec though)

here is assumed to be absolute. there is URI reference.

>>> join('http://example/x/y/z', '../abc')
'http://example/x/abc'

Raise ValueError if there uses relative path syntax but here has no hierarchical path.

>>> join('mid:foo@example', '../foo') 
Traceback (most recent call last):
    raise ValueError(here)
ValueError: Base <mid:foo@example> has no slash
after colon - with relative '../foo'.

>>> join('http://example/x/y/z', '')
'http://example/x/y/z'

>>> join('mid:foo@example', '#foo')
'mid:foo@example#foo'

We grok IRIs

>>> len(u'Andr\xe9')
5

>>> join('http://example.org/', u'#Andr\xe9')
u'http://example.org/#Andr\xe9'
Parameters

  • here (str) –

  • there (str) –

Return type

str

rdflib.plugins.parsers.notation3.runNamespace()[source]

Returns a URI suitable as a namespace for run-local objects

Return type

str

rdflib.plugins.parsers.notation3.splitFragP(uriref, punc=0)[source]

split a URI reference before the fragment

Punctuation is kept.

e.g.

>>> splitFragP("abc#def")
('abc', '#def')

>>> splitFragP("abcdef")
('abcdef', '')
Parameters

  • uriref (str) –

  • punc (int) –

Return type

Tuple[str, str]

rdflib.plugins.parsers.notation3.uniqueURI()[source]

A unique URI

Return type

str

rdflib.plugins.parsers.nquads module

This is a rdflib plugin for parsing NQuad files into Conjunctive graphs that can be used and queried. The store that backs the graph must be able to handle contexts.

>>> from rdflib import ConjunctiveGraph, URIRef, Namespace
>>> g = ConjunctiveGraph()
>>> data = open("test/data/nquads.rdflib/example.nquads", "rb")
>>> g.parse(data, format="nquads") 
<Graph identifier=... (<class 'rdflib.graph.Graph'>)>
>>> assert len(g.store) == 449
>>> # There should be 16 separate contexts
>>> assert len([x for x in g.store.contexts()]) == 16
>>> # is the name of entity E10009 "Arco Publications"?
>>> #   (in graph http://bibliographica.org/entity/E10009)
>>> # Looking for:
>>> # <http://bibliographica.org/entity/E10009>
>>> #   <http://xmlns.com/foaf/0.1/name>
>>> #   "Arco Publications"
>>> #   <http://bibliographica.org/entity/E10009>
>>> s = URIRef("http://bibliographica.org/entity/E10009")
>>> FOAF = Namespace("http://xmlns.com/foaf/0.1/")
>>> assert(g.value(s, FOAF.name).eq("Arco Publications"))
class rdflib.plugins.parsers.nquads.NQuadsParser(sink=None, bnode_context=None)[source]

Bases: W3CNTriplesParser

Parameters
__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.nquads', 'parse': <function NQuadsParser.parse>, 'parseline': <function NQuadsParser.parseline>, '__dict__': <attribute '__dict__' of 'NQuadsParser' objects>, '__weakref__': <attribute '__weakref__' of 'NQuadsParser' objects>, '__doc__': None, '__annotations__': {'sink': "Union[DummySink, 'NTGraphSink']", 'buffer': 'Optional[str]', 'file': 'Optional[Union[TextIO, codecs.StreamReader]]', 'line': 'Optional[str]'}})
__module__ = 'rdflib.plugins.parsers.nquads'
__weakref__

list of weak references to the object (if defined)

buffer: Optional[str]
file: Optional[Union[TextIO, codecs.StreamReader]]
line: Optional[str]
parse(inputsource, sink, bnode_context=None, **kwargs)[source]

Parse inputsource as an N-Quads file.

Parameters
Return type

ConjunctiveGraph

parseline(bnode_context=None)[source]
Parameters

bnode_context (Optional[MutableMapping[str, BNode]]) –

Return type

None

sink: Union[DummySink, 'NTGraphSink']

rdflib.plugins.parsers.ntriples module

N-Triples Parser License: GPL 2, W3C, BSD, or MIT Author: Sean B. Palmer, inamidst.com

class rdflib.plugins.parsers.ntriples.DummySink[source]

Bases: object

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.ntriples', '__init__': <function DummySink.__init__>, 'triple': <function DummySink.triple>, '__dict__': <attribute '__dict__' of 'DummySink' objects>, '__weakref__': <attribute '__weakref__' of 'DummySink' objects>, '__doc__': None, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.ntriples'
__weakref__

list of weak references to the object (if defined)

triple(s, p, o)[source]
class rdflib.plugins.parsers.ntriples.NTGraphSink(graph)[source]

Bases: object

Parameters

graph (Graph) –

__init__(graph)[source]
Parameters

graph (Graph) –

__module__ = 'rdflib.plugins.parsers.ntriples'
__slots__ = ('g',)
g
triple(s, p, o)[source]
Parameters
Return type

None

class rdflib.plugins.parsers.ntriples.NTParser[source]

Bases: Parser

parser for the ntriples format, often stored with the .nt extension

See http://www.w3.org/TR/rdf-testcases/#ntriples

__module__ = 'rdflib.plugins.parsers.ntriples'
__slots__ = ()
classmethod parse(source, sink, **kwargs)[source]

Parse the NT format

Parameters
Return type

None

class rdflib.plugins.parsers.ntriples.W3CNTriplesParser(sink=None, bnode_context=None)[source]

Bases: object

An N-Triples Parser. This is a legacy-style Triples parser for NTriples provided by W3C Usage:

p = W3CNTriplesParser(sink=MySink())
sink = p.parse(f) # file; use parsestring for a string

To define a context in which blank node identifiers refer to the same blank node across instances of NTriplesParser, pass the same dict as bnode_context to each instance. By default, a new blank node context is created for each instance of W3CNTriplesParser.

Parameters
__init__(sink=None, bnode_context=None)[source]
Parameters
__module__ = 'rdflib.plugins.parsers.ntriples'
__slots__ = ('_bnode_ids', 'sink', 'buffer', 'file', 'line')
buffer: Optional[str]
eat(pattern)[source]
Parameters

pattern (Pattern[str]) –

Return type

Match[str]

file: Optional[Union[TextIO, StreamReader]]
line: Optional[str]
literal()[source]
Return type

Union[Literal[False], Literal]

nodeid(bnode_context=None)[source]
Parameters

bnode_context (Optional[MutableMapping[str, BNode]]) –

Return type

Union[Literal[False], BNode]

object(bnode_context=None)[source]
Parameters

bnode_context (Optional[MutableMapping[str, BNode]]) –

Return type

Union[URIRef, BNode, Literal]

parse(f, bnode_context=None)[source]

Parse f as an N-Triples file.

Parameters
Return type

Union[DummySink, NTGraphSink]

parseline(bnode_context=None)[source]
Parameters

bnode_context (Optional[MutableMapping[str, BNode]]) –

Return type

None

parsestring(s, **kwargs)[source]

Parse s as an N-Triples string.

Parameters

s (Union[bytes, bytearray, str]) –

Return type

None

peek(token)[source]
Parameters

token (str) –

Return type

bool

predicate()[source]
Return type

URIRef

readline()[source]

Read an N-Triples line from buffered input.

Return type

Optional[str]

sink: Union[DummySink, NTGraphSink]
subject(bnode_context=None)[source]
Return type

Union[BNode, URIRef]

uriref()[source]
Return type

Union[Literal[False], URIRef]

rdflib.plugins.parsers.ntriples.unquote(s)[source]

Unquote an N-Triples string.

Parameters

s (str) –

Return type

str

rdflib.plugins.parsers.ntriples.uriquote(uri)[source]
Parameters

uri (str) –

Return type

str

rdflib.plugins.parsers.rdfxml module

An RDF/XML parser for RDFLib

class rdflib.plugins.parsers.rdfxml.BagID(value: str, base: Optional[str] = None)[source]

Bases: URIRef

__init__(val)[source]
__module__ = 'rdflib.plugins.parsers.rdfxml'
__slots__ = ['li']
li
next_li()[source]
class rdflib.plugins.parsers.rdfxml.ElementHandler[source]

Bases: object

__init__()[source]
__module__ = 'rdflib.plugins.parsers.rdfxml'
__slots__ = ['start', 'char', 'end', 'li', 'id', 'base', 'subject', 'predicate', 'object', 'list', 'language', 'datatype', 'declared', 'data']
base
char
data
datatype
declared
end
id
language
li
list
next_li()[source]
object
predicate
start
subject
class rdflib.plugins.parsers.rdfxml.RDFXMLHandler(store)[source]

Bases: ContentHandler

Parameters

store (Graph) –

__init__(store)[source]
Parameters

store (Graph) –

__module__ = 'rdflib.plugins.parsers.rdfxml'
absolutize(uri)[source]
Parameters

uri (str) –

Return type

URIRef

add_reified(sid, spo)[source]
Parameters
characters(content)[source]

Receive notification of character data.

The Parser will call this method to report each chunk of character data. SAX parsers may return all contiguous character data in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity so that the Locator provides useful information.

Parameters

content (str) –

Return type

None

convert(name, qname, attrs)[source]
Parameters
Return type

Tuple[URIRef, Dict[URIRef, str]]

property current: Optional[ElementHandler]
Return type

Optional[ElementHandler]

document_element_start(name, qname, attrs)[source]
Parameters
Return type

None

endElementNS(name, qname)[source]

Signals the end of an element in namespace mode.

The name parameter contains the name of the element type, just as with the startElementNS event.

Parameters

name (Tuple[Optional[str], str]) –

Return type

None

endPrefixMapping(prefix)[source]

End the scope of a prefix-URI mapping.

See startPrefixMapping for details. This event will always occur after the corresponding endElement event, but the order of endPrefixMapping events is not otherwise guaranteed.

Parameters

prefix (Optional[str]) –

Return type

None

error(message)[source]
Parameters

message (str) –

Return type

NoReturn

get_current()[source]
Return type

Optional[ElementHandler]

get_next()[source]
Return type

Optional[ElementHandler]

get_parent()[source]
Return type

Optional[ElementHandler]

ignorableWhitespace(content)[source]

Receive notification of ignorable whitespace in element content.

Validating Parsers must use this method to report each chunk of ignorable whitespace (see the W3C XML 1.0 recommendation, section 2.10): non-validating parsers may also use this method if they are capable of parsing and using content models.

SAX parsers may return all contiguous whitespace in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity, so that the Locator provides useful information.

Return type

None

list_node_element_end(name, qname)[source]
Parameters

name (Tuple[str, str]) –

Return type

None

literal_element_char(data)[source]
Parameters

data (str) –

Return type

None

literal_element_end(name, qname)[source]
Parameters

name (Tuple[str, str]) –

Return type

None

literal_element_start(name, qname, attrs)[source]
Parameters
Return type

None

property next: Optional[ElementHandler]
Return type

Optional[ElementHandler]

node_element_end(name, qname)[source]
Parameters

name (Tuple[str, str]) –

Return type

None

node_element_start(name, qname, attrs)[source]
Parameters
Return type

None

property parent: Optional[ElementHandler]
Return type

Optional[ElementHandler]

processingInstruction(target, data)[source]

Receive notification of a processing instruction.

The Parser will invoke this method once for each processing instruction found: note that processing instructions may occur before or after the main document element.

A SAX parser should never report an XML declaration (XML 1.0, section 2.8) or a text declaration (XML 1.0, section 4.3.1) using this method.

Return type

None

property_element_char(data)[source]
Parameters

data (str) –

Return type

None

property_element_end(name, qname)[source]
Parameters

name (Tuple[str, str]) –

Return type

None

property_element_start(name, qname, attrs)[source]
Parameters
Return type

None

reset()[source]
Return type

None

setDocumentLocator(locator)[source]

Called by the parser to give the application a locator for locating the origin of document events.

SAX parsers are strongly encouraged (though not absolutely required) to supply a locator: if it does so, it must supply the locator to the application by invoking this method before invoking any of the other methods in the DocumentHandler interface.

The locator allows the application to determine the end position of any document-related event, even if the parser is not reporting an error. Typically, the application will use this information for reporting its own errors (such as character content that does not match an application’s business rules). The information returned by the locator is probably not sufficient for use with a search engine.

Note that the locator will return correct information only during the invocation of the events in this interface. The application should not attempt to use it at any other time.

Parameters

locator (Locator) –

startDocument()[source]

Receive notification of the beginning of a document.

The SAX parser will invoke this method only once, before any other methods in this interface or in DTDHandler (except for setDocumentLocator).

Return type

None

startElementNS(name, qname, attrs)[source]

Signals the start of an element in namespace mode.

The name parameter contains the name of the element type as a (uri, localname) tuple, the qname parameter the raw XML 1.0 name used in the source document, and the attrs parameter holds an instance of the Attributes class containing the attributes of the element.

The uri part of the name tuple is None for elements which have no namespace.

Parameters
Return type

None

startPrefixMapping(prefix, namespace)[source]

Begin the scope of a prefix-URI Namespace mapping.

The information from this event is not necessary for normal Namespace processing: the SAX XML reader will automatically replace prefixes for element and attribute names when the http://xml.org/sax/features/namespaces feature is true (the default).

There are cases, however, when applications need to use prefixes in character data or in attribute values, where they cannot safely be expanded automatically; the start/endPrefixMapping event supplies the information to the application to expand prefixes in those contexts itself, if necessary.

Note that start/endPrefixMapping events are not guaranteed to be properly nested relative to each-other: all startPrefixMapping events will occur before the corresponding startElement event, and all endPrefixMapping events will occur after the corresponding endElement event, but their order is not guaranteed.

Parameters
Return type

None

class rdflib.plugins.parsers.rdfxml.RDFXMLParser[source]

Bases: Parser

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.rdfxml', '__init__': <function RDFXMLParser.__init__>, 'parse': <function RDFXMLParser.parse>, '__dict__': <attribute '__dict__' of 'RDFXMLParser' objects>, '__weakref__': <attribute '__weakref__' of 'RDFXMLParser' objects>, '__doc__': None, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.rdfxml'
__weakref__

list of weak references to the object (if defined)

parse(source, sink, **args)[source]
Parameters
Return type

None

rdflib.plugins.parsers.rdfxml.create_parser(target, store)[source]
Parameters
Return type

XMLReader

rdflib.plugins.parsers.trig module

class rdflib.plugins.parsers.trig.TrigParser[source]

Bases: Parser

An RDFLib parser for TriG

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.trig', '__doc__': '\n    An RDFLib parser for TriG\n\n    ', '__init__': <function TrigParser.__init__>, 'parse': <function TrigParser.parse>, '__dict__': <attribute '__dict__' of 'TrigParser' objects>, '__weakref__': <attribute '__weakref__' of 'TrigParser' objects>, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.trig'
__weakref__

list of weak references to the object (if defined)

parse(source, graph, encoding='utf-8')[source]
Parameters
Return type

None

class rdflib.plugins.parsers.trig.TrigSinkParser(store, openFormula=None, thisDoc='', baseURI=None, genPrefix='', why=None, turtle=False)[source]

Bases: SinkParser

Parameters
__module__ = 'rdflib.plugins.parsers.trig'
directiveOrStatement(argstr, h)[source]
Parameters

  • argstr (str) –

  • h (int) –

Return type

int

graph(argstr, i)[source]

Parse trig graph, i.e.

<urn:graphname> = { .. triples .. }

return -1 if it doesn’t look like a graph-decl raise Exception if it looks like a graph, but isn’t.

Parameters

  • argstr (str) –

  • i (int) –

Return type

int

labelOrSubject(argstr, i, res)[source]
Parameters
Return type

int

rdflib.plugins.parsers.trig.becauseSubGraph(*args, **kwargs)[source]

rdflib.plugins.parsers.trix module

A TriX parser for RDFLib

class rdflib.plugins.parsers.trix.TriXHandler(store)[source]

Bases: ContentHandler

An Sax Handler for TriX. See http://sw.nokia.com/trix/

Parameters

store (Store) –

__init__(store)[source]
Parameters

store (Store) –

__module__ = 'rdflib.plugins.parsers.trix'
characters(content)[source]

Receive notification of character data.

The Parser will call this method to report each chunk of character data. SAX parsers may return all contiguous character data in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity so that the Locator provides useful information.

Parameters

content (str) –

Return type

None

endElementNS(name, qname)[source]

Signals the end of an element in namespace mode.

The name parameter contains the name of the element type, just as with the startElementNS event.

Parameters

name (Tuple[Optional[str], str]) –

Return type

None

endPrefixMapping(prefix)[source]

End the scope of a prefix-URI mapping.

See startPrefixMapping for details. This event will always occur after the corresponding endElement event, but the order of endPrefixMapping events is not otherwise guaranteed.

Parameters

prefix (Optional[str]) –

Return type

None

error(message)[source]
Parameters

message (str) –

Return type

NoReturn

get_bnode(label)[source]
Parameters

label (str) –

Return type

BNode

ignorableWhitespace(content)[source]

Receive notification of ignorable whitespace in element content.

Validating Parsers must use this method to report each chunk of ignorable whitespace (see the W3C XML 1.0 recommendation, section 2.10): non-validating parsers may also use this method if they are capable of parsing and using content models.

SAX parsers may return all contiguous whitespace in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity, so that the Locator provides useful information.

Return type

None

processingInstruction(target, data)[source]

Receive notification of a processing instruction.

The Parser will invoke this method once for each processing instruction found: note that processing instructions may occur before or after the main document element.

A SAX parser should never report an XML declaration (XML 1.0, section 2.8) or a text declaration (XML 1.0, section 4.3.1) using this method.

Return type

None

reset()[source]
Return type

None

setDocumentLocator(locator)[source]

Called by the parser to give the application a locator for locating the origin of document events.

SAX parsers are strongly encouraged (though not absolutely required) to supply a locator: if it does so, it must supply the locator to the application by invoking this method before invoking any of the other methods in the DocumentHandler interface.

The locator allows the application to determine the end position of any document-related event, even if the parser is not reporting an error. Typically, the application will use this information for reporting its own errors (such as character content that does not match an application’s business rules). The information returned by the locator is probably not sufficient for use with a search engine.

Note that the locator will return correct information only during the invocation of the events in this interface. The application should not attempt to use it at any other time.

Parameters

locator (Locator) –

startDocument()[source]

Receive notification of the beginning of a document.

The SAX parser will invoke this method only once, before any other methods in this interface or in DTDHandler (except for setDocumentLocator).

Return type

None

startElementNS(name, qname, attrs)[source]

Signals the start of an element in namespace mode.

The name parameter contains the name of the element type as a (uri, localname) tuple, the qname parameter the raw XML 1.0 name used in the source document, and the attrs parameter holds an instance of the Attributes class containing the attributes of the element.

The uri part of the name tuple is None for elements which have no namespace.

Parameters
Return type

None

startPrefixMapping(prefix, namespace)[source]

Begin the scope of a prefix-URI Namespace mapping.

The information from this event is not necessary for normal Namespace processing: the SAX XML reader will automatically replace prefixes for element and attribute names when the http://xml.org/sax/features/namespaces feature is true (the default).

There are cases, however, when applications need to use prefixes in character data or in attribute values, where they cannot safely be expanded automatically; the start/endPrefixMapping event supplies the information to the application to expand prefixes in those contexts itself, if necessary.

Note that start/endPrefixMapping events are not guaranteed to be properly nested relative to each-other: all startPrefixMapping events will occur before the corresponding startElement event, and all endPrefixMapping events will occur after the corresponding endElement event, but their order is not guaranteed.

Parameters
Return type

None

class rdflib.plugins.parsers.trix.TriXParser[source]

Bases: Parser

A parser for TriX. See http://sw.nokia.com/trix/

__dict__ = mappingproxy({'__module__': 'rdflib.plugins.parsers.trix', '__doc__': 'A parser for TriX. See http://sw.nokia.com/trix/', '__init__': <function TriXParser.__init__>, 'parse': <function TriXParser.parse>, '__dict__': <attribute '__dict__' of 'TriXParser' objects>, '__weakref__': <attribute '__weakref__' of 'TriXParser' objects>, '__annotations__': {}})
__init__()[source]
__module__ = 'rdflib.plugins.parsers.trix'
__weakref__

list of weak references to the object (if defined)

parse(source, sink, **args)[source]
Parameters
Return type

None

rdflib.plugins.parsers.trix.create_parser(store)[source]
Parameters

store (Store) –

Return type

XMLReader

Module contents