Baidu API interface python3 how to use the [Face Search example]

Import urllib, SYS
 Import urllib.request AS urllib2 # urllib2 in py3 we use to replace urllib.request 
Import ssl
 Import json 

# AK client_id official network acquisition, client_secret official net acquisition of SK 
Host = ' HTTPS: //aip.baidubce ? .com / oauth / 2.0 / token grant_type = client_credentials & client_id = [AK] their own & client_secret = [SK] ' 
Request = urllib2.Request (Host) 
request.add_header ( ' Content-Type ' , ' the Application / json; charset . 8-UTF = ' ) 
Response = urllib2.urlopen (Request) 
Content = response.read()
if (content):
    access_token=json.loads(content)["access_token"]
    # print(access_token)

# url="https://aip.baidubce.com/rest/2.0/face/v3/search?access_token="+access_token

# encoding:utf-8
import urllib


'''
人脸搜索
'''
import base64
with open("G:\\PY\\face.png",'rb') as f:
    imageB = base64.b64encode(f.read())
image = str(imageB,'utf-8')

request_url = "https://aip.baidubce.com/rest/2.0/face/v3/search"


params = {"image_type":"BASE64","group_id_list":"faceLib,group1","quality_control":"LOW"}
params["image"]=image
params1=str(params)


# params = "{\"image\":\"027d8308a2ec665acb1bdf63e513bcb9\",\"image_type\":\"FACE_TOKEN\",\"group_id_list\":\"group_repeat,group_233\",\"quality_control\":\"LOW\",\"liveness_control\":\"NORMAL\"}"
# data = urllib.parse.urlencode(params).encode("utf-8")

# access_token = '[调用鉴权接口获取的token]'
request_url = request_url + "?access_token=" + access_token

# request = urllib2.Request(url=request_url, data=params1)
# print(request)
# request.add_header('Content-Type', 'application/json')
# print(request)

response = urllib2.urlopen(request_url,data=urllib.parse.urlencode(params).encode("utf-8"))#data=urllib.parse.urlencode(data).encode("utf-8")
content = response.read()
if content:
    print(content)