Python - SPARQLWrapper格式错误(语义网)

Question

我有这个SPARQL query in python

sparql = SPARQLWrapper("http://dbpedia.org/sparql",returnFormat="json")

sparql.setQuery(''' 
SELECT DISTINCT *
where {
    []  foaf:isPrimaryTopicOf ?wikiID.
    FILTER (regex(?wikiID, "(\\W|^)World(\\W|$)","i")) . 
}
ORDER BY ?wikiID
limit 50 
''')    

queryResult = sparql.query().convert()

print json.dumps (queryResult, indent= 2,  separators=(',',':'))

但没有结果。

(SPARQLWrapper.SPARQLExceptions.QueryBadFormed: 
 QueryBadFormed: a bad request has been sent to the endpoint, 
 probably the sparql query is bad formed)

在http://dbpedia.org/sparql上，查询是确定的，错误在哪里？

Answer 1

这就是解决办法

sparql.method = 'GET'

sparql.setQuery(''' 
    SELECT DISTINCT *
    FROM <http://dbpedia.org>
    where {
    []  foaf:isPrimaryTopicOf ?wikiID.
    FILTER (regex(?wikiID, "(\\\W|^)World(\\\W|$)")) . 
        }
    ORDER BY ?wikiID
    limit 50 
''')