python - 如何在 python 3.6 中使用 owlReady 库从 protege 中查询 owl 文件

Question

如何使用 python owlReady 2 库从 protege 加载和查询 owl 文件

Answer 1

在这里，在 python 3.6 中使用了 python owlReady 2 库

您必须将owlReady 2和rdflib库附加到项目才能执行此代码

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在 pycharm 中，这些库可以通过 IDE 立即下载

文件-->设置-->搜索“项目解释器”-->点击“+”号然后搜索库并一一安装

智能设置

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from owlready2 import *


class SparqlQueries:
def __init__(self):
    my_world = World()
    my_world.get_ontology("file://ExampleOntolohy.owl").load() #path to the owl file is given here
    sync_reasoner(my_world)  #reasoner is started and synchronized here
    self.graph = my_world.as_rdflib_graph()

def search(self):
    #Search query is given here
    #Base URL of your ontology has to be given here
    query = "base <http://www.semanticweb.org/ExampleOntology> " \
            "SELECT ?s ?p ?o " \
            "WHERE { " \
            "?s ?p ?o . " \
            "}"

    #query is being run
    resultsList = self.graph.query(query)

    #creating json object
    response = []
    for item in resultsList:
        s = str(item['s'].toPython())
        s = re.sub(r'.*#',"",s)

        p = str(item['p'].toPython())
        p = re.sub(r'.*#', "", p)

        o = str(item['o'].toPython())
        o = re.sub(r'.*#', "", o)
        response.append({'s' : s, 'p' : p, "o" : o})

    print(response) #just to show the output
    return response


runQuery = SparqlQueries()
runQuery.search()