import urllib2
from rdflib import ConjunctiveGraph, BNode, Literal, BNode, Namespace, RDF, URIRef

root_uri = "http://del.icio.us/rss/tag/"
keywords_1 = ["tutorial", "introduction"]
keywords_2 = ["rdf", "semweb"]

class DeliciousSource:
    
    def __init__(self):
        self.graph = ConjunctiveGraph()
        
    def get_rss(self, uri):
        response = urllib2.urlopen(uri)
        return response.read()
    
    def append(self, rdf):
        self.graph.append(rdf)
        
    def __str__(self):
        return self.graph.serialize()
        
    
def main():
    for keyword_1 in keywords_1:
        for keyword_2 in keywords_2:
            deli_uri = root_uri + keyword_1 + "+" + keyword_2
            print deli_uri
    ds = DeliciousSource()
    rss = ds.get_rss("http://del.icio.us/rss/tag/sparql+tutorial")
    ds.append(rss)
    print ds

if __name__ == "__main__":
    main()