Convert GeoJSON to WKT plygon

gistfile1.py

#!/usr/bin/env python2.7

import sys
import json
from pprint import pprint

def main():
    """
    converts the files from https://github.com/johan/world.geo.json/tree/master/countries
    see: http://gis.stackexchange.com/questions/61295/is-there-any-efficient-way-to-convert-geojson-to-wkt
    """
    d = json.load(sys.stdin)
    coords = d['features'][0]['geometry']['coordinates'][0]

    sys.stdout.write('POLYGON((')
    i=0
    for x, y in coords:
        i+=1
        line = "{} {}".format(x, y)
        if i != len(coords):
            line += ', '
        sys.stdout.write(line)
    sys.stdout.write( '))')
    sys.stdout.write('\n')

if __name__ == '__main__':
    main()