!!! info
    Sie können auch:

    * `response_model_exclude_defaults=True`
    * `response_model_exclude_none=True`

!!! info
    👆 💪 ⚙️:

    * `response_model_exclude_defaults=True`
    * `response_model_exclude_none=True`

    🔬 <a href="https://docs.pydantic.dev/latest/concepts/serialization/#modeldict" class="external-link" target="_blank">Pydantic 🩺</a> `exclude_defaults` &amp; `exclude_none`.

                                    "$ref": "#/components/schemas/Body_create_file_files__post"
                                }
                            }
                        },
                        "required": True,
                    },
                }
            }
        },
        "components": {
            "schemas": {
                "Body_create_file_files__post": {

                                    "$ref": "#/components/schemas/Body_login_login_post"
                                }
                            }
                        },
                        "required": True,
                    },
                }
            },
            "/users/me": {
                "get": {
                    "responses": {
                        "200": {

                                }
                            }
                        },
                        "required": True,
                    },
                }
            },
            "/users/me/": {
                "get": {
                    "responses": {
                        "200": {

### Erforderlich mit Ellipse (`...`)

Es gibt eine Alternative, die explizit deklariert, dass ein Wert erforderlich ist. Sie können als Default das <abbr title='Zeichenfolge, die einen Wert direkt darstellt, etwa 1, "hallowelt", True, None'>Literal</abbr> `...` setzen:

=== "Python 3.9+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/query_params_str_validations/tutorial006b_an_py39.py!}
    ```

=== "Python 3.8+"

### Worker Processes and Ports

Remember from the docs [About HTTPS](https.md){.internal-link target=_blank} that only one process can be listening on one combination of port and IP address in a server?

This is still true.

So, to be able to have **multiple processes** at the same time, there has to be a **single process listening on a port** that then transmits the communication to each worker process in some way.

### Memory per Process

🔜, Pydantic *🏷* 👂, `Item` & `User`, 🚮 🔗 `Config` 🎓.

👉 <a href="https://docs.pydantic.dev/latest/api/config/" class="external-link" target="_blank">`Config`</a> 🎓 ⚙️ 🚚 📳 Pydantic.

`Config` 🎓, ⚒ 🔢 `orm_mode = True`.

=== "🐍 3️⃣.6️⃣ &amp; 🔛"

    ```Python hl_lines="15  19-20  31  36-37"
    {!> ../../../docs_src/sql_databases/sql_app/schemas.py!}
    ```

=== "🐍 3️⃣.9️⃣ &amp; 🔛"

Тогда для `Query` укажите параметр `deprecated=True`:

=== "Python 3.10+"

    ```Python hl_lines="19"
    {!> ../../../docs_src/query_params_str_validations/tutorial010_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="19"

                    "summary": "Read Item",
                    "operationId": "read_item_items__item_id__get",
                    "parameters": [
                        {
                            "required": True,
                            "schema": {"title": "Item Id", "type": "string"},
                            "name": "item_id",
                            "in": "path",
                        }
                    ],