import requests
import json
import datetime,time
from datetime import timedelta,datetime
 
client_id = "***";
client_secret = "***";
grant_type = "client_credentials";
r = requests.post('https://connect-api.cloud.huawei.com/api/oauth2/v1/token', 
    json={"grant_type": grant_type, "client_id":client_id, "client_secret":client_secret})
js = json.loads(r.text)
token = js["access_token"]
 
def totimestamp(dt, epoch=datetime(1970,1,1)):
    td = dt - epoch
    return str((td.microseconds + (td.seconds + td.days * 86400) * 10**6) / 10**6 )
 
begin_time = datetime.now() - timedelta(hours=1000)
begin_time = totimestamp(begin_time).split('.')[0]
 
end_time = totimestamp(datetime.now()).split('.')[0]
app_id =  "103154181";
 
url = "https://connect-api-drru.cloud.huawei.com/api/reviews/v1/manage/dev/reviews"
countries = 'RU'
headers = {'Authorization':  'Bearer ' + token, 'client_id':client_id}
r = requests.get(url + "?appId=" + app_id + "&beginTime=" +begin_time + "&endTime=" +end_time + "&countries=" + countries, headers=headers)
print(r.text)