Add unsaved datetime import fixes

posttroll/subscriber.py

@@ -24,10 +24,10 @@
 
 """Simple library to subscribe to messages."""
 
-from time import sleep
+import datetime as dt
 import logging
 import time
-from datetime import datetime, timedelta
+from time import sleep
 from threading import Lock
 from urllib.parse import urlsplit
 
@@ -311,8 +311,8 @@ def start(self):
         """Start the subscriber."""
         def _get_addr_loop(service, timeout):
             """Try to get the address of *service* until for *timeout* seconds."""
-            then = datetime.now() + timedelta(seconds=timeout)
-            while datetime.now() < then:
+            then = dt.datetime.now() + dt.timedelta(seconds=timeout)
+            while dt.datetime.now() < then:
                 addrs = get_pub_address(service, nameserver=self._nameserver)
                 if addrs:
                     return [addr["URI"] for addr in addrs]