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()
这里,使用了python3.6中的python owlReady 2库
为了执行这段代码,您必须将owlReady 2和rdflib库附加到项目中
在pycharm中,可以通过IDE立即下载这些库
“文件”>;“设置”>;“搜索”“项目解释器”>;单击“+”标记,然后搜索库并逐个安装
intellij settings
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