import requests

url = 'https://www.instagram.com/accounts/login/'
url_main = url + 'ajax/'
csrftoken = requests.get(url)
auth = {'username': '79031373379', 'password': 'anya1971'}
headers = {
    'user-agent': "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36",
    'x-csrftoken': csrftoken.cookies['csrftoken'],
    'referer': "https://www.instagram.com/accounts/login/",
}
data = requests.post(url_main,data=auth,headers=headers)
sessionid = data.cookies['sessionid']

print(data.content)
print(data.cookies['ds_user_id'])
print(data.cookies['sessionid'])