[scripts][execute] Clean run directory parameter handling

beat/backend/python/scripts/execute.py

@@ -194,15 +194,16 @@ def main():
         logger.debug("zmq client connected to loop `%s'", loop_addr)
 
     # Check the dir
-    if not os.path.exists(args["<dir>"]):
+    run_directory = args["<dir>"]
+    if not os.path.exists(run_directory):
         send_error(
-            logger, socket, "sys", "Running directory `%s' not found" % args["<dir>"]
+            logger, socket, "sys", "Running directory `%s' not found" % run_directory
         )
         close(logger, [socket, db_socket, loop_socket], context)
         return 1
 
     # Load the configuration
-    with open(os.path.join(args["<dir>"], "configuration.json"), "r") as f:
+    with open(os.path.join(run_directory, "configuration.json"), "r") as f:
         cfg = simplejson.load(f)
 
     # Create a new user with less privileges (if necessary)
@@ -246,7 +247,7 @@ def main():
         # Sets up the execution
         executor = AlgorithmExecutor(
             socket,
-            args["<dir>"],
+            run_directory,
             cache_root=cache,
             db_socket=db_socket,
             loop_socket=loop_socket,