//// tab | Тест

`pip install "foo[bar]"`

Примеры строковых литералов во фрагментах кода: `"this"`, `'that'`.

Сложный пример строковых литералов во фрагментах кода: `f"I like {'oranges' if orange else "apples"}"`

Хардкор: `Yesterday, my friend wrote: "If you spell incorrectly correctly, you have spelled it incorrectly". To which I answered: "Correct, but 'incorrectly' is incorrectly not '"incorrectly"'"`

////

- release-notes.md
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      include:
      - '*'
  abbr: null
  attr_list: null
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		t.Fatalf("Failed to auto migrate, got error %v", err)
	}

	if tables, err := DB.Migrator().GetTables(); err != nil {
		t.Fatalf("Failed to get database all tables, but got error %v", err)
	} else {
		for _, t1 := range []string{"users", "accounts", "pets", "companies", "toys", "languages", "tools"} {
			hasTable := false
			for _, t2 := range tables {
				if t2 == t1 {
					hasTable = true
					break
				}
			}

The same would happen if you had something like a <abbr title='A union between multiple types means "any of these types".'>union</abbr> between different types where one or more of them are not valid Pydantic types, for example this would fail 💥:

{* ../../docs_src/response_model/tutorial003_04_py310.py hl[8] *}

É equivalente a `set(["name", "description"])`.

///

#### Usando `list`s em vez de `set`s { #using-lists-instead-of-sets }

Se você esquecer de usar um `set` e usar uma `list` ou `tuple` em vez disso, o FastAPI ainda o converterá em um `set` e funcionará corretamente:

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

## Recapitulação { #recap }

//// tab | Test

`pip install "foo[bar]"`

Beispiele für Stringliterale in Codeschnipseln: `"this"`, `'that'`.

Ein schwieriges Beispiel für Stringliterale in Codeschnipseln: `f"I like {'oranges' if orange else "apples"}"`

Hardcore: `Yesterday, my friend wrote: "If you spell incorrectly correctly, you have spelled it incorrectly". To which I answered: "Correct, but 'incorrectly' is incorrectly not '"incorrectly"'"`

////

Si vous souhaitez un rappel de 2 minutes sur l'utilisation des types en Python (même si vous ne comptez pas utiliser FastAPI), jetez un oeil au tutoriel suivant: [Python Types](python-types.md){.internal-link target=_blank}.

Vous écrivez du python standard avec des annotations de types:

```Python
from datetime import date

from pydantic import BaseModel

{"item_id":"foo"}
```

## Paramètres de chemin typés

Vous pouvez déclarer le type d'un paramètre de chemin dans la fonction, en utilisant les annotations de type Python :


{* ../../docs_src/path_params/tutorial002.py hl[7] *}

Ici, `item_id` est déclaré comme `int`.

/// check | vérifier

Ceci vous permettra d'obtenir des fonctionnalités de l'éditeur dans votre fonction, telles

しかし、Pythonには型や「タイプパラメータ」を使ってリストを宣言する方法があります:

### typingの`List`をインポート

まず、Pythonの標準の`typing`モジュールから`List`をインポートします:

{* ../../docs_src/body_nested_models/tutorial002.py hl[1] *}

### タイプパラメータを持つ`List`の宣言

`list`や`dict`、`tuple`のようなタイプパラメータ（内部の型）を持つ型を宣言するには:

* `typing`モジュールからそれらをインストールします。
* 角括弧（`[`と`]`）を使って「タイプパラメータ」として内部の型を渡します:

```Python
from typing import List

my_list: List[str]
```

型宣言の標準的なPythonの構文はこれだけです。

    get() = state == STATE_CLOSED

  override fun createRequestBody(
    request: Request,
    contentLength: Long,
  ): Sink =
    when {
      request.body?.isDuplex() == true -> throw ProtocolException(
        "Duplex connections are not supported for HTTP/1",
      )
      request.isChunked -> newChunkedSink() // Stream a request body of unknown length.