python requests 接口: 调用百度开发者平台图片文字识别接口

1、get请求：

（1）图灵聊天机器人

import requests
import json

url="http://www.tuling123.com/openapi/api"
apiKey="ec961279f453459b9248f0aeb6600bbe"

while True:
    try:
        info=input()
        if info=="bye":
            print("see you again")
            break
        params={"key":apiKey,"info":info}
        r=requests.get(url=url,params=params)
        r=json.loads(r.text)
        print(r["text"])    
    except:
        break

2、post请求

import requests
import json

url="http://httpbin.org/post"

data={"name":"god","age":"∞"}

res=requests.post(url=url,data=json.dumps(data))
print(res.text)

3、json格式化文件。

import json
res={"name":"张三","age":1}
with open("dic.json","w") as f:
    json.dump(res,f)


with open("dic.json","r") as f:
    r=json.load(f)

print(r['name'])

4、token鉴权

（1）注册百度开发者平台：https://passport.baidu.com/v2/?reg

（2）新手指南：http://ai.baidu.com/ai-doc/REFERENCE/Ck3dwjgn3

识别图片中文字：

import requests
import json
import base64

API_KEY="KgKqmpVH9LGphO423uZ0wcGD"
SECRET_KEY="bb65GOAo0CsqlI6E3PyrzZbgkdsyUsDT"
img_url="https://699pic.com/tupian-401907129.html"
TOKEN_URL = 'https://aip.baidubce.com/oauth/2.0/token'

#通用文字识别
OCR_URL = "https://aip.baidubce.com/rest/2.0/ocr/v1/accurate_basic"


"""
获取token
"""

def fetch_token():
    params = {'grant_type': 'client_credentials',
              'client_id': API_KEY,
              'client_secret': SECRET_KEY}
    #返回字典
    try:
        res=requests.get(url=TOKEN_URL,params=params,timeout=2).json()
    except Exception as err:
        return err
    if "access_token" in res.keys():
        return res["access_token"]
    else:
        return 'please overwrite the correct API_KEY and SECRET_KEY'


"""
读取本地图片
"""
def read_file(image_path):
    try:
        with open(image_path,"rb") as fp:
            img=base64.b64encode(fp.read())
        return img
    except Exception as e:
        return e

"""
调用远程服务
"""

def request(url,data=None):
    req=requests.post(url,data)
    return req.json()

"""读取文字
"""
def get_word(res):
    text=""
    for words_result in res["words_result"]:
        text=text+words_result["words"]
    return text



if __name__=="__main__":
    token=fetch_token()
    image_path="test.PNG"
    params={"image":read_file(image_path)}
    url="{}?access_token={}".format(OCR_URL,token)
    res=request(url,params)
    req=get_word(res)
    print(req)
"""output"""

学号姓名专业2018816王可乐计算机2018357王可笑数学2018816王可爱动漫
"""

 5、session会话保持

import requests

s = requests.session()
params={"username":"admin","password":"passwd"}
s.post(url,data=params)
res=s.get(url)
print(res.text)

6、使用cookie

import requests

cookies={"a":"b"}
res=requests.get(url,cookies=cookies)
print(res.text)