python – 在rdflib中使用上下文
发布时间:2020-12-16 23:39:19 所属栏目:Python 来源:网络整理
导读:我很难找到一个明确,明智的rdflib使用上下文的例子. ConjunctiveGraph不接受上下文,并且不推荐使用Graph.我应该如何在同一个全局ConjunctiveGraph中的不同上下文中创建和操作? 解决方法 是.这是代码 import rdflibfrom rdflib.Graph import Graphconj=rdfli
我很难找到一个明确,明智的rdflib使用上下文的例子.
ConjunctiveGraph不接受上下文,并且不推荐使用Graph.我应该如何在同一个全局ConjunctiveGraph中的不同上下文中创建和操作? 解决方法
是.这是代码
import rdflib from rdflib.Graph import Graph conj=rdflib.ConjunctiveGraph() NS=rdflib.Namespace("http://example.com/#") NS_CTX=rdflib.Namespace("http://example.com/context/#") alice=NS.alice bob=NS.bob charlie=NS.charlie pizza=NS.pizza meat=NS.meat chocolate=NS.chocolate loves=NS.loves hates=NS.hates likes=NS.likes dislikes=NS.dislikes love_ctx=Graph(conj.store,NS_CTX.love) food_ctx=Graph(conj.store,NS_CTX.food) love_ctx.add( (alice,loves,bob) ) love_ctx.add( (alice,charlie) ) love_ctx.add( (bob,hates,charlie) ) love_ctx.add( (charlie,bob) ) food_ctx.add( (alice,likes,chocolate) ) food_ctx.add( (alice,meat) ) food_ctx.add( (alice,dislikes,pizza) ) print "Full context" for t in conj: print t print "" print "Contexts" for c in conj.contexts(): print c print "love context" for t in love_ctx: print t print "food context" for t in food_ctx: print t 这是输出 Full context (rdflib.URIRef('http://example.com/#bob'),rdflib.URIRef('http://example.com/#hates'),rdflib.URIRef('http://example.com/#charlie')) (rdflib.URIRef('http://example.com/#alice'),rdflib.URIRef('http://example.com/#likes'),rdflib.URIRef('http://example.com/#chocolate')) (rdflib.URIRef('http://example.com/#alice'),rdflib.URIRef('http://example.com/#meat')) (rdflib.URIRef('http://example.com/#alice'),rdflib.URIRef('http://example.com/#dislikes'),rdflib.URIRef('http://example.com/#pizza')) (rdflib.URIRef('http://example.com/#alice'),rdflib.URIRef('http://example.com/#loves'),rdflib.URIRef('http://example.com/#bob')) (rdflib.URIRef('http://example.com/#alice'),rdflib.URIRef('http://example.com/#charlie')) (rdflib.URIRef('http://example.com/#charlie'),rdflib.URIRef('http://example.com/#bob')) Contexts <http://example.com/context/#food> a rdfg:Graph;rdflib:storage [a rdflib:Store;rdfs:label 'IOMemory']. <http://example.com/context/#love> a rdfg:Graph;rdflib:storage [a rdflib:Store;rdfs:label 'IOMemory']. love context (rdflib.URIRef('http://example.com/#bob'),rdflib.URIRef('http://example.com/#bob')) food context (rdflib.URIRef('http://example.com/#alice'),rdflib.URIRef('http://example.com/#pizza')) (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |