import requests
from bs4 import BeautifulSoup as BS

def get_weather(city):

    r = requests.get('https://sinoptik.ua/погода-%s' % city.lower())
    #r = requests.get('https://sinoptik.com.by/погода-%s' % city.lower())
    html = BS(r.content, 'html.parser')
    res_ua = ''
    try:
        t_min  = html.select('.temperature .min')[0].text
        t_max  = html.select('.temperature .max')[0].text
        descr  = html.select('.wDescription .description')[0].text
        res_ua = '%s %s %s' % (t_min, t_max, descr.strip())
    except Exception as err:
        print('error get weather from .ua site')
        pass
    res_by = ''
    try:
        temp  = ' '.join(html.find('div', class_ = 'weather__content_tab current').
                         find('div', class_ = 'weather__content_tab-temperature').
                         text.split())
        descr  = html.find('div', class_ = 'weather__article_description-text').text
        res_by = '%s %s' % (temp, descr)
    except Exception as err:
        print('error get weather from .com.by site')
        pass
    res = res_ua or res_by
    if not res:
        return ('не найдена погода для города "%s"' % city)
    else:
        return res

res = get_weather('Гродно')
print(res)