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

docs_src/dependencies/tutorial008c_py39.py

@@ -0,0 +1,27 @@
+from fastapi import Depends, FastAPI, HTTPException
+
+app = FastAPI()
+
+
+class InternalError(Exception):
+    pass
+
+
+def get_username():
+    try:
+        yield "Rick"
+    except InternalError:
+        print("Oops, we didn't raise again, Britney 😱")
+
+
+@app.get("/items/{item_id}")
+def get_item(item_id: str, username: str = Depends(get_username)):
+    if item_id == "portal-gun":
+        raise InternalError(
+            f"The portal gun is too dangerous to be owned by {username}"
+        )
+    if item_id != "plumbus":
+        raise HTTPException(
+            status_code=404, detail="Item not found, there's only a plumbus here"
+        )
+    return item_id