Translation from command line

translate.py

#!/usr/bin/env python
from urllib import urlencode, urlopen
from sys import argv
import json


def translate(lang1, lang2, text):
    """
    docs: http://code.google.com/intl/pl/apis/ajaxlanguage/documentation/
    """
    url = 'https://ajax.googleapis.com/ajax/services/language/translate?'
    params = urlencode((
        ('v', 1.0),
        ('q', text),
        ('langpair', '%s|%s' % (lang1, lang2)),
    ))
    response = json.load(urlopen(url + params))
    if response.get('responseData'):
        return response.get('responseData').get('translatedText')
    else:
        raise Exception(response.get('responseDetails'))

if __name__ == "__main__":
    if len(argv) >= 4:
        print translate(argv[1], argv[2], ' '.join(argv[3:]))
    else:
        print 'Usage: %s [from lang] [to lang] [text]' % argv[0]