get doubanFM starred songs

doubanfm.py

import requests
import json
import os

data = {
    'email': '[email protected]',
    'password': '',
    'app_name': 'radio_android',
    'version': '606',
}

params = {
    'count': 200,
    'app_name': 'radio_android',
    'version': '606',
}


def login():
    if os.path.exists('key.json'):
        key = json.load(open('key.json'))
    else:
        key = requests.post('https://www.douban.com/j/app/login',
                            data=data).json()
        json.dump(key, open('key.json', 'w'))
    return type('key', (), key)


def main():
    ''' method from http://lisie.hdu.edu.cn/passionke/?p=4105 '''
    global params

    key = login()
    assert key.err == 'ok', 'Login error: {}'.format(key.err)

    params.update({'token': key.token,
                   'user_id': key.user_id,
                   'expire': key.expire})
    data = {}
    while 1:
        params['exclude'] = '|'.join(data.keys())
        new_data = requests.get(
            'http://www.douban.com/j/app/radio/liked_songs',
            params=params).json()['songs']

        if len(new_data) == 0:
            break
        data.update({t['sid']: t for t in new_data})
        print 'new:{} total:{}'.format(len(new_data), len(data))

if __name__ == '__main__':
    main()