📝 Update source examples and docs from Python 3.9 to 3.10 (#14900)

docs_src/dependencies/tutorial008e_py310.py

@@ -0,0 +1,15 @@
+from fastapi import Depends, FastAPI
+
+app = FastAPI()
+
+
+def get_username():
+    try:
+        yield "Rick"
+    finally:
+        print("Cleanup up before response is sent")
+
+
+@app.get("/users/me")
+def get_user_me(username: str = Depends(get_username, scope="function")):
+    return username