gtranslate.py

#!/usr/bin/env python2.6
#-*- coding:utf-8 -*-
# http://d.hatena.ne.jp/yogit/20091206/1260092233

import sys
import urllib
import urllib2
import json

def translate(from_lang='en', to_lang='ja', word=''):
    url = 'http://ajax.googleapis.com/ajax/services/language/translate'
    values = {'v': 1.0,
              'q': word,
              'langpair': from_lang + '|' + to_lang}
    str_GET = urllib.urlencode(values)
    req = urllib2.Request(url, str_GET)
    res = urllib2.urlopen(req)
    data = json.loads(res.read())
    if data['responseStatus'] == 200:
        return data['responseData']['translatedText']
    else:
        msg = data['responseDetails'] if data['responseDetails'] else str(data['responseStatus'])
        return 'error: ' + msg

if __name__ == '__main__':
    result = translate('en', 'ja', sys.argv[1])
    print sys.argv[1] + ': ' + result