Sync fastapi docs from b5ca1324 on 2025-12-07

docs_src/additional_status_codes/tutorial001_an_py310.py

@@ -0,0 +1,25 @@
+from typing import Annotated
+
+from fastapi import Body, FastAPI, status
+from fastapi.responses import JSONResponse
+
+app = FastAPI()
+
+items = {"foo": {"name": "Fighters", "size": 6}, "bar": {"name": "Tenders", "size": 3}}
+
+
+@app.put("/items/{item_id}")
+async def upsert_item(
+    item_id: str,
+    name: Annotated[str | None, Body()] = None,
+    size: Annotated[int | None, Body()] = None,
+):
+    if item_id in items:
+        item = items[item_id]
+        item["name"] = name
+        item["size"] = size
+        return item
+    else:
+        item = {"name": name, "size": size}
+        items[item_id] = item
+        return JSONResponse(status_code=status.HTTP_201_CREATED, content=item)