Sync fastapi docs from 50fa3f7c on 2026-01-11

docs_src/cookie_params/tutorial001_py39.py

@@ -0,0 +1,10 @@
+from typing import Union
+
+from fastapi import Cookie, FastAPI
+
+app = FastAPI()
+
+
+@app.get("/items/")
+async def read_items(ads_id: Union[str, None] = Cookie(default=None)):
+    return {"ads_id": ads_id}