assert response.json() == {
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "openapi": "3.1.0",
        "paths": {
            "/a": {
                "get": {
                    "operationId": "a_a_get",
                    "responses": {
                        "200": {
                            "content": {"application/json": {"schema": {}}},
                            "description": "Successful Response",

                            "content": {"application/vnd.api+json": {"schema": {}}},
                        },
                    },
                    "summary": "A",
                    "operationId": "a_a_get",
                }
            },
            "/b": {
                "get": {
                    "responses": {
                        "500": {
                            "description": "Error",

                            },
                        },
                        "200": {"description": "Successful Response"},
                    },
                    "summary": "A",
                    "operationId": "a_a_get",
                }
            },
            "/b": {
                "get": {
                    "responses": {
                        "500": {
                            "description": "Error",

                            },
                        },
                        "204": {"description": "Successful Response"},
                    },
                    "summary": "A",
                    "operationId": "a_a_get",
                }
            },
            "/b": {
                "get": {
                    "responses": {
                        "204": {"description": "No Content"},
                        "200": {

It is equivalent to `set(["name", "description"])`.

///

#### Using `list`s instead of `set`s { #using-lists-instead-of-sets }

If you forget to use a `set` and use a `list` or `tuple` instead, FastAPI will still convert it to a `set` and it will work correctly:

{* ../../docs_src/response_model/tutorial006_py310.py hl[29,35] *}

## Recap { #recap }