loc.py 文件源码

def __link_subject__(self, term, subject_iri):
        """Function takes a term and queries LOC service
        Args:
            term(str): Term
            subject_iri(rdflib.URIRef): Subject IRI
        """
        subject_result = self.__build_lc_url__(
            term, 
            "http://id.loc.gov/authorities/subjects")
        lsch_iri, title = self.__process_loc_results__(
            subject_result.json(),
            term)
        if lsch_iri is None:
            return None, None
        entities = []
        for row in self.graph.subjects(predicate=BF.subject,
                                       object=subject_iri):
            entities.append(row)
        for entity in entities:
            self.graph.add((entity, BF.subject, lsch_iri))
            bibcat.delete_iri(self.graph, subject_iri)
            return lsch_iri, title
        return None, None