{
    "text": "<UTF-8编码文本>",
    "max_gen_len": "64"
}

# coding=utf-8

import sys
import json

# 保证兼容python2以及python3
IS_PY3 = sys.version_info.major == 3
if IS_PY3:
    from urllib.request import urlopen
    from urllib.request import Request
    from urllib.error import URLError
    from urllib.parse import urlencode
    from urllib.parse import quote_plus
else:
    import urllib2
    from urllib import quote_plus
    from urllib2 import urlopen
    from urllib2 import Request
    from urllib2 import URLError
    from urllib import urlencode

    reload(sys)
    sys.setdefaultencoding('utf8')

# 防止https证书校验不正确
import ssl

ssl._create_default_https_context = ssl._create_unverified_context

# 百度云控制台获取到ak，sk以及
# EasyDL官网获取到URL

# ak
API_KEY = 'kQWXQ8oe5G5T7ATzXXXXXXXX'

# sk
SECRET_KEY = 'Y30GtHsKzyH6fUUsQl32GvoBXXXXXXXX'

# url
EASYDL_TEXT_CLASSIFY_URL = "https://aip.baidubce.com/rpc/2.0/ai_custom/v1/text_gen/lirics_gen"

"""  TOKEN start """
TOKEN_URL = 'https://aip.baidubce.com/oauth/2.0/token'
"""
    获取token
"""


def fetch_token():
    params = {'grant_type': 'client_credentials',
              'client_id': API_KEY,
              'client_secret': SECRET_KEY}
    post_data = urlencode(params)
    if (IS_PY3):
        post_data = post_data.encode('utf-8')
    req = Request(TOKEN_URL, post_data)
    try:
        f = urlopen(req, timeout=5)
        result_str = f.read()
        print('success')
    except URLError as err:
        print(err)
    if (IS_PY3):
        result_str = result_str.decode()

    result = json.loads(result_str)

    if ('access_token' in result.keys() and 'scope' in result.keys()):
        if not 'brain_all_scope' in result['scope'].split(' '):
            print('please ensure has check the  ability')
            exit()
        return result['access_token']
    else:
        print('please overwrite the correct API_KEY and SECRET_KEY')
        exit()


"""
    调用远程服务
"""


def request(url, data):
    if IS_PY3:
        req = Request(url, json.dumps(data).encode('utf-8'))
    else:
        req = Request(url, json.dumps(data))

    has_error = False
    try:
        f = urlopen(req)
        result_str = f.read()
        if (IS_PY3):
            result_str = result_str.decode()
        return result_str
    except URLError as err:
        print(err)


if __name__ == '__main__':

    # 获取access token
    token = fetch_token()

    # 拼接url
    url = EASYDL_TEXT_CLASSIFY_URL + "?access_token=" + token

    text = "歌名：晴天；歌词："

    # 请求接口
    # 测试
    response = request(url,
                       {
                           'text': text,
                           'max_gen_len': 128
                       })

    result_json = json.loads(response)['result']['content']

    print('u{0}'.format(result_json))

{
	"text": "歌名：夏日的海边；歌词：",
	"max_gen_len": "64"
}

{
	"log_id": "123456",
	"result": [{
		"content": "故事的小黄花 从出生那年就飘着 童年的荡秋千",
		"is_truncate": 0
	}]
}

{
	"text": "问题是：十月去青海应该带什么？答案是：",
	"max_gen_len": "64"
}

{
	"log_id": "123456",
	"result": [{
		"content": "带个男朋友",
		"is_truncate": 0
	}]
}

{
  "error_code": 110,
  "error_msg": "Access token invalid or no longer valid"
}