from contextlib import closing
from http.client import HTTPSConnection
from urllib.request import urlopen
import re

patt = re.compile('<h1>[^<]+</h1>')

with urlopen('https://example.com') as f:
    content = f.read().decode('utf-8')
    print(patt.findall(content))

with closing(HTTPSConnection('example.com')) as conn:
    conn.request('GET', '/')
    content = conn.getresponse().read().decode('utf-8')
    print(patt.findall(content))