Load only the module that executes the specified mepo command

mepo.d/command/command.py

@@ -1,25 +1,10 @@
-import os
-import glob
 from importlib import import_module
 
-THIS_DIR = os.path.dirname(__file__)
-
-def get_exclude_list():
-    patterns = ['command.py', '*~', '__pycache__']
-    exclude_list = list()
-    for pat in patterns:
-        tmp = glob.glob(os.path.join(THIS_DIR, pat))
-        exclude_list.extend([os.path.basename(x) for x in tmp])
-    return exclude_list
-
-def get_available_mepo_commands():
-    exclude_list = get_exclude_list()
-    return [x for x in os.listdir(THIS_DIR) if x not in exclude_list]
-
 def run(args):
-    # Dispatch table: d = {'list': <module 'command.list.list'>, ...}
-    cmd_list = get_available_mepo_commands()
-    d = {x: import_module('command.{}.{}'.format(x, x)) for x in cmd_list}
+    mepo_cmd = args.mepo_cmd
+
+    # Load the module containing the 'run' method of specified mepo command
+    cmd_module = import_module('command.{}.{}'.format(mepo_cmd, mepo_cmd))
 
-    # Execute run method of specified mepo command, e.g. d['list'].run(args)
-    d[args.mepo_cmd].run(args)
+    # Execute 'run' method of the specified mepo command
+    cmd_module.run(args)