accepts an onion address (without .onion suffix) and prints the introduction points (relay fingerprints)

get-intro-points.py

#!/usr/bin/env python
from stem.control import Controller
import base64
import binascii
import sys
onion = sys.argv[1]
with Controller.from_socket_file(path='/home/username/.tor/mytorsocket') as controller:
  controller.authenticate()
  desc = controller.get_hidden_service_descriptor(onion)
  for introduction_point in desc.introduction_points():
    fingerprint = binascii.hexlify(base64.b32decode(introduction_point.identifier.upper())).upper()
    print(onion+":"+fingerprint)