In addition to the posts about IPv4. Examples on Python.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | # Python 2
from urllib2 import urlopen, Request
from re import search
f = urlopen(Request("http://internet.yandex.ru/"))
print search('IPv4:\s(\d+\.){3}\d+', f.read()).group(0)
f.close()
# Python 3
from urllib.request import urlopen
from re import compile, search
f = urlopen("http://internet.yandex.ru/")
print(compile('IPv4:\s(\d+\.){3}\d+').search(str(f.read())).group(0))
f.close()
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Tags: ipv4