Convert Geonames RDF dump to n-triples.

geonames.py

'''
Created on 13 Nov 2014

@author: <https://github.com/cmarat>

Convert Geonames RDF dump [1] to n-triples.

Uncompress the dump and pass the file name as a command
line parameter, or pipe it into stdin.

[1] http://download.geonames.org/all-geonames-rdf.zip 

'''

import rdflib
import fileinput

fout = open('geonames.nt', 'w')
xml_lines = (l for l in fileinput.input() if l[:5] == '<?xml')
for line in xml_lines:
    g = rdflib.Graph()
    g.parse(data=line, format='xml')
    fout.write(g.serialize(format='nt'))
fout.close()