feat: fix linting errors

litellm/proxy/management_endpoints/internal_user_endpoints.py

@@ -15,7 +15,7 @@ import asyncio
 import traceback
 import uuid
 from datetime import datetime, timedelta, timezone
-from typing import Any, List, Optional, Union
+from typing import Any, List, Optional, Union, cast
 
 import fastapi
 from fastapi import APIRouter, Depends, Header, HTTPException, Request, status
@@ -743,7 +743,7 @@ async def user_update(
                 **existing_user_row.model_dump(exclude_none=True)
             )
 
-        existing_metadata = existing_user_row.metadata if existing_user_row else {}
+        existing_metadata = cast(Dict, getattr(existing_user_row, "metadata", {}) or {})
 
         non_default_values = prepare_metadata_fields(
             data=data,

litellm/proxy/management_endpoints/model_management_endpoints.py

@@ -350,7 +350,14 @@ async def delete_model(
     model_info: ModelInfoDelete,
     user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
 ):
-    global llm_router, llm_model_list, general_settings, user_config_file_path, proxy_config
+    from litellm.proxy.proxy_server import (
+        general_settings,
+        llm_model_list,
+        llm_router,
+        proxy_config,
+        user_config_file_path,
+    )
+
     try:
         """
         [BETA] - This is a beta endpoint, format might change based on user feedback. - https://github.com/BerriAI/litellm/issues/964