Touchups on Alice one-off example.

examples/alice_sets_policy_with_ursula.py

@@ -4,9 +4,8 @@ import datetime
 
 import requests
 
-from nkms.characters import Alice, Bob, Ursula, congregate
+from nkms.characters import Alice, Bob, Ursula
 from nkms.network.node import NetworkyStuff
-from nkms.policy.models import ContractResponse
 
 ALICE = Alice()
 BOB = Bob()
@@ -17,14 +16,15 @@ ALICE.learn_about_actor(URSULA)
 
 class SandboxNetworkyStuff(NetworkyStuff):
     def find_ursula(self, contract=None):
-        ursula = Ursula.as_discovered_on_network(None, None, pubkey_sig_bytes=bytes(URSULA.seal),
+        ursula = Ursula.as_discovered_on_network(dhr_port=None, dht_interface=None, pubkey_sig_bytes=bytes(URSULA.seal),
                                                  rest_address="localhost", rest_port=3500)
         response = requests.post("http://localhost:3500/consider_contract", bytes(contract))
         response.was_accepted = True
         return ursula, response
 
     def enact_policy(self, ursula, hrac, payload):
-        response = requests.post('http://{}:{}/kFrag/{}'.format(ursula.rest_address, ursula.rest_port, hrac.hex()), payload)
+        response = requests.post('http://{}:{}/kFrag/{}'.format(ursula.rest_address, ursula.rest_port, hrac.hex()),
+                                 payload)
         # TODO: Something useful here and it's probably ready to go down into NetworkyStuff.
         return response.status_code == 200
 
@@ -36,4 +36,3 @@ n = 1
 uri = b"secret/files/and/stuff"
 policy = ALICE.grant(BOB, uri, networky_stuff, m=1, n=n,
                      expiration=policy_end_datetime)
-