Converts country 'geoname' data from http://www.geonames.org/export/ to JSON.

geoname2json.py

import os
import sys
import csv
import json

filename = sys.argv[1]
name, _ = os.path.splitext(filename)

header = ['geonameid', 'name', 'asciiname', 'alternatenames',
          'latitude', 'longitude', 'featureclass', 'featurecode',
          'countrycode', 'cc2', 'admin1code', 'admin2code', 'admin3code',
          'admin4code', 'population', 'elevation', 'dem', 'timezone', 'date']
records = []

with open(filename, mode='r', encoding='ISO-8859-1') as src:
  reader = csv.reader(src, delimiter='\t', quotechar='"')
  for row in reader:
    records.append({key: row[i] for (i, key) in enumerate(header)})

with open('%s.json' % name, 'w') as dst:
  json.dump(records, dst, indent='  ')