set(dict.keys()) is the same as set(dict)

celery/backends/amqp.py

@@ -216,7 +216,7 @@ class AMQPBackend(BaseDictBackend):
             with self._create_consumer(bindings, channel) as consumer:
                 while ids:
                     r = self.drain_events(conn, consumer, timeout)
-                    ids ^= set(r.keys())
+                    ids ^= set(r)
                     for ready_id, ready_meta in r.iteritems():
                         yield ready_id, ready_meta
 

celery/backends/base.py

@@ -365,7 +365,7 @@ class KeyValueStoreBackend(BaseDictBackend):
             r = self._mget_to_results(self.mget([self.get_key_for_task(k)
                                                     for k in keys]), keys)
             self._cache.update(r)
-            ids ^= set(r.keys())
+            ids ^= set(r)
             for key, value in r.iteritems():
                 yield key, value
             if timeout and iterations * interval >= timeout:

celery/beat.py

@@ -267,7 +267,7 @@ class Scheduler(object):
 
     def merge_inplace(self, b):
         schedule = self.schedule
-        A, B = set(schedule.keys()), set(b.keys())
+        A, B = set(schedule), set(b)
 
         # Remove items from disk not in the schedule anymore.
         for key in A ^ B:

celery/bin/camqadm.py

@@ -249,7 +249,7 @@ class AMQShell(cmd.Cmd):
         say("unknown syntax: '%s'. how about some 'help'?" % line)
 
     def get_names(self):
-        return set(self.builtins.keys() + self.amqp.keys())
+        return set(self.builtins) | set(self.amqp)
 
     def completenames(self, text, *ignored):
         """Return all commands starting with `text`, for tab-completion."""

celery/security/__init__.py

@@ -27,7 +27,7 @@ Please see the configuration reference for more information.
 
 
 def disable_untrusted_serializers(whitelist=None):
-    for name in set(registry._decoders.keys()) - set(whitelist or []):
+    for name in set(registry._decoders) - set(whitelist or []):
         try:
             registry.disable(name)
         except SerializerNotInstalled:

contrib/release/verify_config_reference.py

@@ -8,7 +8,7 @@ ignore = frozenset(["BROKER_INSIST", "CELERYD_POOL_PUTLOCKS",
 
 
 def find_undocumented_settings(directive=".. setting:: "):
-    all = set(DEFAULTS.keys())
+    all = set(DEFAULTS)
     documented = set(line.strip()[len(directive):].strip()
                         for line in input()
                             if line.strip().startswith(directive))