Python - https://id.unica.vn/login

import requests
import bs4
import sys

g_session = requests.Session()
#g_session.headers['User-Agent'] = 'Mozilla/52' # doesn't need it

DEBUG = True

def Login():
    User = 'vananXX@gmail.com'
    Pass = 'tienl0i123456'
    url = 'https://id.unica.vn/login'

    try:
        r = g_session.get(url)
        if r.status_code != 200:
            print("Loi server") # print instead of return
            sys.exit(1)
    except Exception as e:
        print("Loi: %s - url: %s", e, url) # print instead of return
        return False

    sauce = r.text # r.text

    soup = bs4.BeautifulSoup(sauce, 'lxml')

    #all_metas = soup.find_all('meta')
    #authenticity_token = all_metas[0].get('content')

    first_metas = soup.find('meta')
    authenticity_token = first_metas.get('content')

    if DEBUG:
        #print('[DEBUG] all_metas:', all_metas)
        print('[DEBUG] first_metas:', first_metas)
        print('[DEBUG] authenticity_token:', authenticity_token)

    if not authenticity_token:
        print("Vui long lien he nha phat trien") # print instead of return
        return False

    payload = { 'email' : User, # wrong name
                'pass': Pass,   # wrong name
                '_csrf' : authenticity_token # wrong name and without [0]
        }

    if DEBUG:
        print('[DEBUG] payload:', payload)

    try:
        r = g_session.post(url, data = payload)
        if r.status_code != 200:
            print("Loi dang nhap") # print instead of return
            return False # add return
    except Exception as e:
        print("Loi: %s - url: %s", e, url) # print instead of return
        return False

    if DEBUG:
        print('[DEBUG] r.url:', r.url)
        print('[DEBUG] r.history:', r.history)

    return r.url == 'https://unica.vn/home'


# --- start ---

print(Login())