from urllib.request import urlopen
from bs4 import BeautifulSoup
r=urlopen("http://smeshariki-mir.ru/forum/viewtopic.php?f=37&t=7804")
bs=BeautifulSoup(r, "html.parser")
the_list = bs.findAll('img')[58:][:-85]
srcs = [image['src'] for image in the_list
        if image['src'].startswith('http') or
        image['src'].startswith('https')]
for number in range(len(srcs)):
    if not srcs[number].endswith('.gif'):
        srcs[number] += '.gif'