say.py

#!/usr/bin/env python
import requests
import json
import base64
URL = 'http://rospeex.ucri.jgn-x.jp/nauth_json/jsServices/VoiceTraSS'


def post(text):
    params = json.dumps({'method': 'speak', 'params': ['ja', text, '*', 'audio/x-wav']})
    return requests.post(URL, data = params)


if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument('text')
    parser.add_argument('wavfile')
    args = parser.parse_args()

    response = post(args.text)
    ret = response.json()

    if ret['error']:
        print 'error'
        exit(1)

    with open(args.wavfile, 'w') as f:
        f.write(base64.decodestring(ret['result']['audio']))