import requests
from bs4 import BeautifulSoup as soup
# from pathlib import Path
GB = 'https://geekbrains.ru'
LOGIN_URL = 'https://geekbrains.ru/login'
CPT = 'https://geekbrains.ru/wanna_captcha'
with requests.Session() as session:
    r = session.get(GB)
    print(f'Code for {GB} is :', r.status_code)
    soup = soup(r.text, 'lxml')
    token = soup.select_one('[name="authenticity_token"]')['value'] #str class
    user_agent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36'
    r = session.post(CPT, data = {'user[email]': 'mail',
                                  'user[password]': 'pass',
                                  'authenticity_token' : token,
                                  'utf8': 'true',
                                  'user[remember_me]': '0',
                                  'user-agent': user_agent})
    cpt = session.get(CPT)
    log_url = session.get(LOGIN_URL)
    print(f'Code for {CPT} is :', cpt.status_code)
    print(f'Code for {LOGIN_URL} is :', log_url.status_code)

 import requests
from bs4 import BeautifulSoup as soup
from urllib.parse import urljoin
with requests.Session() as session:
    session.headers['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'
    session.headers['User-Agent'] = 'Mozilla/5.0 (X11; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0'
    resp = session.get('https://geekbrains.ru/login')
    auth_token = soup(resp.text, 'lxml').select_one('input[name="authenticity_token"]')['value']
    resp = session.post(
        'https://geekbrains.ru/wanna_captcha',
        data={
            'user[email]': '',
            'user[password]': '',
            'user[remember_me]': 0,
            'authenticity_token': auth_token,
            'utf8': '✓'
        }
    )
    url_user_profile = soup(resp.text, 'lxml').select_one('li.gb-top-menu__item.dropdown > a')['href']
    resp = session.get(urljoin('https://geekbrains.ru', url_user_profile))
    user_name = soup(resp.text, 'lxml').select_one('div.user-info > div > span').text
    print('Logged as', user_name)