term.py 文件源码

def n3(self, namespace_manager = None):
        r'''
        Returns a representation in the N3 format.

        Examples::

            >>> Literal("foo").n3()
            %(u)s'"foo"'

        Strings with newlines or triple-quotes::

            >>> Literal("foo\nbar").n3()
            %(u)s'"""foo\nbar"""'

            >>> Literal("''\'").n3()
            %(u)s'"\'\'\'"'

            >>> Literal('"""').n3()
            %(u)s'"\\"\\"\\""'

        Language::

            >>> Literal("hello", lang="en").n3()
            %(u)s'"hello"@en'

        Datatypes::

            >>> Literal(1).n3()
            %(u)s'"1"^^<http://www.w3.org/2001/XMLSchema#integer>'

            >>> Literal(1.0).n3()
            %(u)s'"1.0"^^<http://www.w3.org/2001/XMLSchema#double>'

            >>> Literal(True).n3()
            %(u)s'"true"^^<http://www.w3.org/2001/XMLSchema#boolean>'

        Datatype and language isn't allowed (datatype takes precedence)::

            >>> Literal(1, lang="en").n3()
            %(u)s'"1"^^<http://www.w3.org/2001/XMLSchema#integer>'

        Custom datatype::

            >>> footype = URIRef("http://example.org/ns#foo")
            >>> Literal("1", datatype=footype).n3()
            %(u)s'"1"^^<http://example.org/ns#foo>'

        Passing a namespace-manager will use it to abbreviate datatype URIs:

            >>> from rdflib import Graph
            >>> Literal(1).n3(Graph().namespace_manager)
            %(u)s'"1"^^xsd:integer'
        '''
        if namespace_manager:
            return self._literal_n3(qname_callback =
                                    namespace_manager.normalizeUri)
        else:
            return self._literal_n3()