1.先去百度云官网注册登录，然后创建一个应用

2.创建应用后会有API KEY  和 Secret Key

 3.获取token，在接口中填入API Key 和Secret Key

import requests 


host = 'https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=API KEY&client_secret=Secret Key'
response = requests.get(host)
token=response.josn()['access_token']

4.调用百度云发票图片识别接口

import requests
import base64

'''
增值税发票识别
'''

request_url = "https://aip.baidubce.com/rest/2.0/ocr/v1/vat_invoice"
f = open('图片路径', 'rb')
img = base64.b64encode(f.read())

params = {"image":img}
access_token = token #获取的token
request_url = request_url + "?access_token=" + access_token
headers = {'content-type': 'application/x-www-form-urlencoded'}
response = requests.post(request_url, data=params, headers=headers)
print(response.josn())