feat: enhance Windows compatibility for asyncio with warning suppression

local_demo.py

@@ -21,9 +21,17 @@ from dataclasses import dataclass
 from pathlib import Path
 from typing import Any
 
-if sys.platform == "win32" and hasattr(asyncio, "WindowsSelectorEventLoopPolicy"):
+WINDOWS_SELECTOR_POLICY = None
+if sys.platform == "win32":
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", category=DeprecationWarning)
+        WINDOWS_SELECTOR_POLICY = getattr(asyncio, "WindowsSelectorEventLoopPolicy", None)
+
+if WINDOWS_SELECTOR_POLICY is not None:
     # Gradio/Uvicorn is more stable with the selector loop on Windows.
-    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", category=DeprecationWarning)
+        asyncio.set_event_loop_policy(WINDOWS_SELECTOR_POLICY())
 
 try:
     import gradio as gr