Fix some code quality issues (rq#1235)

Author: pnijhara

.deepsource.toml

@@ -0,0 +1,12 @@
+version = 1
+
+test_patterns = ["tests/**"]
+
+exclude_patterns = ["examples/**"]
+
+[[analyzers]]
+name = "python"
+enabled = true
+
+  [analyzers.meta]
+  runtime_version = "3.x.x"

MANIFEST.in

@@ -1,2 +1,3 @@
 include LICENSE
+include *.toml
 recursive-exclude tests *

rq/cli/helpers.py

@@ -143,7 +143,7 @@ def show_workers(queues, raw, by_queue, queue_class, worker_class):
             queue_dict[queue] = worker_class.all(queue=queue)
 
         if queue_dict:
-            max_length = max([len(q.name) for q, in queue_dict.keys()])
+            max_length = max(len(q.name) for q, in queue_dict.keys())
         else:
             max_length = 0
 

rq/scheduler.py

@@ -40,7 +40,7 @@ class RQScheduler(object):
 
     def __init__(self, queues, connection, interval=1):
         self._queue_names = set(parse_names(queues))
-        self._acquired_locks = set([])
+        self._acquired_locks = set()
         self._scheduled_job_registries = []
         self.lock_acquisition_time = None
         self.connection = connection
@@ -68,7 +68,7 @@ def should_reacquire_locks(self):
 
     def acquire_locks(self, auto_start=False):
         """Returns names of queue it successfully acquires lock on"""
-        successful_locks = set([])
+        successful_locks = set()
         pid = os.getpid()
         logging.info("Trying to acquire locks for %s", ", ".join(self._queue_names))
         for name in self._queue_names: