#!/usr/bin/env python3
import dns.name
n = dns.name.from_text('www.dnspython.org')
o = dns.name.from_text('dnspython.org')
print(n.is_subdomain(o)) # True
print(n.is_superdomain(o)) # False
print(n > o) # True
rel = n.relativize(o) # rel is the relative name www
n2 = rel + o
print(n2 == n) # True
print(n.labels) # ['www', 'dnspython', 'org', '']