{* ../../docs_src/path_params/tutorial003.py hl[6,11] *}

Aksi halde, `/users/{user_id}` yolu `"me"` değerinin `user_id` parametresi için gönderildiğini "düşünerek" `/users/me` ile de eşleşir.

Benzer şekilde, bir yol operasyonunu yeniden tanımlamanız mümkün değildir:

{* ../../docs_src/path_params/tutorial003b.py hl[6,11] *}

{* ../../docs_src/path_params/tutorial003.py hl[6,11] *}

Інакше шлях для `/users/{user_id}` також буде відповідати для `/users/me`, "вважаючи", що він отримує параметр `user_id` зі значенням `"me"`.

Аналогічно, Ви не можете оголосити операцію шляху:

{* ../../docs_src/path_params/tutorial003b.py hl[6,11] *}

//// tab | Python 3.10+

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial009_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial009_py39.py!}
```

////

//// tab | Python 3.9+ Alternative

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial009b_py39.py!}
```

////

务必确保每个操作路径的 `operation_id` 都是唯一的。

{* ../../docs_src/path_operation_advanced_configuration/tutorial001.py hl[6] *}

### 使用 *路径操作函数* 的函数名作为 operationId

如果你想用你的 API 的函数名作为 `operationId` 的名字，你可以遍历一遍 API 的函数名，然后使用他们的 `APIRoute.name` 重写每个 *路径操作* 的 `operation_id`。

你应该在添加了所有 *路径操作* 之后执行此操作。

{* ../../docs_src/path_operation_advanced_configuration/tutorial002.py hl[2,12,13,14,15,16,17,18,19,20,21,24] *}

{* ../../docs_src/query_params_str_validations/tutorial003_an_py310.py hl[10] *}

## Add regular expressions { #add-regular-expressions }

You can define a <abbr title="A regular expression, regex or regexp is a sequence of characters that define a search pattern for strings.">regular expression</abbr> `pattern` that the parameter should match:

## Importer `Query`

Pour cela, importez d'abord `Query` depuis `fastapi` :

{* ../../docs_src/query_params_str_validations/tutorial002.py hl[3] *}

## Utiliser `Query` comme valeur par défaut

Construisez ensuite la valeur par défaut de votre paramètre avec `Query`, en choisissant 50 comme `max_length` :

{* ../../docs_src/query_params_str_validations/tutorial002.py hl[9] *}

"docs_src/query_params_str_validations/tutorial013_an_py39.py" = ["B006"]
"docs_src/security/tutorial004_py39.py" = ["B904"]
"docs_src/security/tutorial004_an_py39.py" = ["B904"]
"docs_src/security/tutorial004_an_py310.py" = ["B904"]
"docs_src/security/tutorial004_py310.py" = ["B904"]
"docs_src/security/tutorial005_an_py310.py" = ["B904"]
"docs_src/security/tutorial005_an_py39.py" = ["B904"]

**FastAPI** unterstützt das auf die gleiche Weise wie einfache Strings:

{* ../../docs_src/path_operation_configuration/tutorial002b_py39.py hl[1,8:10,13,18] *}

## Zusammenfassung und Beschreibung { #summary-and-description }

Sie können eine <abbr title="Zusammenfassung">`summary`</abbr> und eine <abbr title="Beschreibung">`description`</abbr> hinzufügen:

{* ../../docs_src/path_operation_configuration/tutorial003_py310.py hl[18:19] *}

**FastAPI** поддерживает это так же, как и в случае с обычными строками:

{* ../../docs_src/path_operation_configuration/tutorial002b_py39.py hl[1,8:10,13,18] *}

## Краткое и развёрнутое содержание { #summary-and-description }

Вы можете добавить параметры `summary` и `description`:

{* ../../docs_src/path_operation_configuration/tutorial003_py310.py hl[18:19] *}

**FastAPI** supports that the same way as with plain strings:

{* ../../docs_src/path_operation_configuration/tutorial002b_py39.py hl[1,8:10,13,18] *}

## Summary and description { #summary-and-description }

You can add a `summary` and `description`:

{* ../../docs_src/path_operation_configuration/tutorial003_py310.py hl[18:19] *}

## Description from docstring { #description-from-docstring }