Владимир Куц

let text = "test1 test2 test3 test4";
text.replace(/\s\S+$/, ' word');
> "test1 test2 test3 word"

j = 0
for i in proxy_list.items():
    proxy = {i[0]: i[1]}
    print(proxy) # для проверки
    if requests.get(url, proxies=proxy, headers=headers).status_code == 200:
        print(type(proxy)) # для проверки
    else:
        j += 1

>>> href = '/popular/day/2017-06-27/page/50/'
>>> re.match('.*\/(\d+)\/$', href).group(1)
'50'