EasyDL文本-文本分类单标签快速开始

# 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 = 'RgdpDFjOHmRQvphsi8bLhIYE'

# sk
SECRET_KEY = 'ja1pDyGaF3vgwPNW3T0EqEkkd5hgl8ug'

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

"""  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()
    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

    # 好评
    text_good = "这个酒店不错，干净而且安静，早餐也好吃"

    # 差评
    text_bad = "不怎么干净，服务员态度也差强人意，以后不会在预订了"
   

    # 请求接口
    # 测试好评
    response = request(url, 
        {
            'text': text_good,
            'top_num': 2
        })

    result_json = json.loads(response)

    result = result_json["results"]

    # 打印好评结果
    print(text_good)
    for obj in result:
        print("  评论类别：" + obj['name'] + "    置信度：" + str(obj['score']))
    print("")

    # 请求接口
    # 测试差评
    response = request(url, 
        {
            'text': text_bad,
            'top_num': 2
        })

    result_json = json.loads(response)

    result = result_json["results"]

    # 打印差评结果
    print(text_bad)
    for obj in result:
        print("  评论类别：" + obj['name'] + "    置信度：" + str(obj['score']))

这个酒店不错，干净而且安静，早餐也好吃
  评论类别：good    置信度：0.974235713482
  评论类别：bad    置信度：0.0257642995566

不怎么干净，服务员态度也差强人意，以后不会在预订了
  评论类别：bad    置信度：0.850781261921
  评论类别：good    置信度：0.149218738079