import requests

login_url = 'https://url.com/login/'
test_url = 'https://url.com/private_page/'

username = 'my_email'
password = 'my_pass'

with requests.Session() as session:

    response = session.get('https://url.com/')
    csrftoken = session.cookies['csrftoken']

    payload = {
    'email': username,
    'password': password,
    'csrftoken': csrftoken
    }

    result = session.post(login_url, data=payload)

    test = session.get(test_url)

print(test.url)