diff --git a/RNS/Identity.py b/RNS/Identity.py
index afa1bf76..7a097a64 100644
--- a/RNS/Identity.py
+++ b/RNS/Identity.py
@@ -127,11 +127,10 @@ class Identity:
         :returns: An :ref:`RNS.Identity<api-identity>` instance that can be used to create an outgoing :ref:`RNS.Destination<api-destination>`, or *None* if the destination is unknown.
         """
         if from_identity_hash:
-            with Identity.known_destinations_lock:
-                destination_hashes = list(Identity.known_destinations.keys())
+            with Identity.known_destinations_lock: destination_hashes = list(Identity.known_destinations.keys())
             for destination_hash in destination_hashes:
                 entry = Identity.known_destinations.get(destination_hash)
-                if entry is None: continue
+                if not entry: continue
                 if target_hash == Identity.truncated_hash(entry[2]):
                     if not _no_use: RNS.Reticulum.get_instance()._used_destination_data(destination_hash)
                     identity = Identity(create_keys=False)
@@ -288,11 +287,10 @@ class Identity:
     def _retain_identity(identity_hash):
         try:
             retained = False
-            with Identity.known_destinations_lock:
-                destination_hashes = list(Identity.known_destinations.keys())
+            with Identity.known_destinations_lock: destination_hashes = list(Identity.known_destinations.keys())
             for destination_hash in destination_hashes:
                 entry = Identity.known_destinations.get(destination_hash)
-                if entry is None: continue
+                if not entry: continue
                 if identity_hash == Identity.truncated_hash(entry[2]):
                     if Identity._retain_destination_data(destination_hash): retained = True
 
@@ -309,8 +307,8 @@ class Identity:
         no_path    = 0
         retained   = 0
         never_used = 0
-        with Identity.known_destinations_lock:
-            destination_hashes = list(Identity.known_destinations.keys())
+
+        with Identity.known_destinations_lock: destination_hashes = list(Identity.known_destinations.keys())
         for destination_hash in destination_hashes:
             try:
                 if RNS.Transport.has_path(destination_hash): has_path = True