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import requests
import csv
from rdflib import Graph, Literal, RDF, URIRef
import time
sparqlHeaders={'User-Agent': 'genenetworkCrawler/1.0 (covid-19.genenetwork.org; pjotr.public821@thebird.nl) genenetworkCrawler/1.0'}
def callSPARQL(query):
payload = {'query': query, 'format': 'json'}
try:
r = requests.get('https://query.wikidata.org/sparql', params=payload, headers=sparqlHeaders)
time.sleep(1)
# Slow process down, in case we did send too many processes. Sleep, then try again
if 'Retry_After' in r.headers:
print(r.headers)
time.sleep(45)
r = requests.get('https://query.wikidata.org/sparql', params=payload, headers=sparqlHeaders)
result = r.json()['results']['bindings']
except Exception as e:
print("Error during SPARQL call. We abort the process and have to investigate")
print(r)
print(r.content)
print(r.url)
raise Exception(e)
return result
g = Graph()
query = """
construct {
?a wdt:P625 ?c.
?a rdfs:label ?label .
?a wdt:P17 ?country.
?country rdfs:label ?country_label .
?country wdt:P30 ?continent.
?continent rdfs:label ?continent_label
} WHERE
{
BIND (XXX as ?a) .
?a wdt:P625 ?c.
?a rdfs:label ?label .
?a wdt:P17 ?country.
?country rdfs:label ?country_label .
?country wdt:P30 ?continent.
?continent rdfs:label ?continent_label
FILTER (lang(?continent_label)='en')
FILTER (lang(?country_label)='en')
FILTER (lang(?label)='en')
}
"""""
outputFile = 'input_location.csv'
with open(outputFile, 'r') as csvfile:
spamreader = csv.reader(csvfile, delimiter=',', quotechar='|')
counter=0
for row in spamreader:
counter=counter+1
try:
tmpquery=query.replace("XXX", "<"+row[0]+">")
print(tmpquery)
returnReply=callSPARQL(tmpquery)
print(returnReply)
for row in returnReply:
print(row)
sub=URIRef(row['subject']['value'])
pred=URIRef(row['predicate']['value'])
if row['object']['type'] == 'uri':
obj = URIRef(row['object']['value'])
elif row['object']['type'] == 'literal':
obj= Literal(row['object']['value'])
g.add(( sub, pred, obj ))
except Exception as e:
print(e)
raise
print(g.serialize(format='n3').decode("utf-8"))
g.serialize(destination='enriched_ouput.txt', format='turtle')
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