Парсинг . Пробовал на разных сайтах , но не везде получалось

import requests
from bs4 import BeautifulSoup as BS
r = requests.get('https://yandex.ru/pogoda/213')
html = BS(r.content, 'html.parser')
for el in html.select('.forecast-briefly__days swiper-container swiper-container-horizontal'):
    t_day = el.select('.forecast-briefly__temp forecast-briefly__temp_day .temp__value')
    t_night = el.select('.forecast-briefly__temp forecast-briefly__temp_night .temp__value')
print(t_night)
print(t_day)

Traceback (most recent call last): File "main3.py", line 11, in print(t_night) NameError: name 't_night' is not defined