The trick is, of course, to figure out where the raw_input has to sit…

import vohelper
import time

@ vohelper.show_exception
def print_coord(privkey, sender_id, msg_id, mtype, params, extra):
  print("{} {}".format(params["ra"], params["dec"]))

with vohelper.SAMP_conn() as conn:
  conn.bind_receive_notification(
    "coord.pointAt.sky",
    print_coord)
  raw_input()