From 705c79df59ede1a339d93c9151724b0a9978f4bf Mon Sep 17 00:00:00 2001
From: Rapptz <rapptz@gmail.com>
Date: Thu, 31 Mar 2022 08:58:53 -0400
Subject: [PATCH] Remove second mapping used for parameter rename lookup

Just keying into param.display_name should be enough
---
 discord/app_commands/commands.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/discord/app_commands/commands.py b/discord/app_commands/commands.py
index 6ceb5a29b..8963df1b4 100644
--- a/discord/app_commands/commands.py
+++ b/discord/app_commands/commands.py
@@ -524,12 +524,10 @@ class Command(Generic[GroupT, P, T]):
 
         values = namespace.__dict__
         transformed_values = {}
-        # get parameters mapped to their renamed names
-        params = {param.display_name: param for param in self._params.values()}
 
-        for name, param in params.items():
+        for param in self._params.values():
             try:
-                value = values[name]
+                value = values[param.display_name]
             except KeyError:
                 if not param.required:
                     transformed_values[param.name] = param.default