📝 Add tutorials python src files

docs/tutorial/src/tutorial74.py

@@ -0,0 +1,18 @@
+from fastapi import APIRouter
+
+router = APIRouter()
+
+
+@router.get("/users/")
+async def read_users():
+    return [{"username": "Foo"}, {"username": "Bar"}]
+
+
+@router.get("/users/{username}")
+async def read_user(username: str):
+    return {"username": username}
+
+
+@router.get("/users/me")
+async def read_user_me():
+    return {"username": "fakecurrentuser"}