#!/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)                  # (b'www', b'dnspython', b'org', b'')