Automate extract domain

[Birdep]

I am trying to extract domain name from a adblock rule , so what
pattern should i used to extract domain name only?

import re
domains = ['ru', ' fr' ,'eu', 'com'] with open('easylist.txt', 'r') as f:
	a=f.read() result=re.findall(r'[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+',a)
unique_result = list(set(result))
for r in unique_result: #Extract domain name out of url domain_name = r.split('.')[1] #Check if domain name is in list of domains, only then add it
if domain_name in domains: print(r)


this one is labours process for that I have to find extension of all domain nd then add it into the domains. So I want something which could automate extract domain only