# Einführung in Python-Typen { #python-types-intro }

Python hat Unterstützung für optionale <abbr title="englisch: Type hints">„Typhinweise“</abbr> (auch <abbr title="englisch: Type annotations">„Typannotationen“</abbr> genannt).

Diese **„Typhinweise“** oder -Annotationen sind eine spezielle Syntax, die es erlaubt, den <abbr title="zum Beispiel: str, int, float, bool">Typ</abbr> einer Variablen zu deklarieren.

                    "security": [{"HTTPBasic": []}],
                }
            }
        },
        "components": {
            "securitySchemes": {
                "HTTPBasic": {
                    "type": "http",
                    "scheme": "basic",
                    "description": "HTTPBasic scheme",
                }
            }
        },

package tests

import (
	"gorm.io/gorm"
	"gorm.io/gorm/callbacks"
	"gorm.io/gorm/clause"
	"gorm.io/gorm/logger"
	"gorm.io/gorm/schema"
)

type DummyDialector struct {
	TranslatedErr error
}

func (DummyDialector) Name() string {
	return "dummy"
}

func (DummyDialector) Initialize(db *gorm.DB) error {
	callbacks.RegisterDefaultCallbacks(db, &callbacks.Config{

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package csv

import "errors"

type s3Error struct {
	code       string
	message    string
	statusCode int
	cause      error
}

func (err *s3Error) Cause() error {
	return err.cause
}

func (err *s3Error) ErrorCode() string {

Commençons avec cette application pour exemple :

{* ../../docs_src/query_params_str_validations/tutorial001.py hl[9] *}

Le paramètre de requête `q` a pour type `Union[str, None]` (ou `str | None` en Python 3.10), signifiant qu'il est de type `str` mais pourrait aussi être égal à `None`, et bien sûr, la valeur par défaut est `None`, donc **FastAPI** saura qu'il n'est pas requis.

/// note

/// tip

This is just standard Python, it's called a "type alias", it's actually not specific to **FastAPI**.

But because **FastAPI** is based on the Python standards, including `Annotated`, you can use this trick in your code. 😎

///

	"ef51":     "EXT2OLD",
	"ef53":     "EXT4",
	"f15f":     "ecryptfs",
	"794c7630": "overlayfs",
	"2fc12fc1": "zfs",
	"ff534d42": "cifs",
	"53464846": "wslfs",
}

// getFSType returns the filesystem type of the underlying mounted filesystem
func getFSType(ftype int64) string {
	fsTypeHex := strconv.FormatInt(ftype, 16)
	fsTypeString, ok := fsType2StringMap[fsTypeHex]
	if !ok {
		return "UNKNOWN"
	}
	return fsTypeString

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package simdj

import "fmt"

type s3Error struct {
	code       string
	message    string
	statusCode int
	cause      error
}

func (err *s3Error) Cause() error {
	return err.cause
}

func (err *s3Error) ErrorCode() string {

import org.apache.maven.api.cli.extensions.CoreExtension;

/**
 * Core extension selector: selects which entries to load from {@link InvokerRequest#coreExtensions()}.
 *
 * @param <C> The context type.
 */
public interface CoreExtensionSelector<C extends LookupContext> {
    /**
     * Selects core extensions to be loaded from list of all sources detected.
     */
    @Nonnull

        importlib.import_module(mod_name)
    assert exc_info.value.errors() == [
        {
            "loc": ("admin_email",),
            "msg": "Field required",
            "type": "missing",
            "input": {},
            "url": IsAnyStr,
        }
    ]


def test_app(client: TestClient):
    response = client.get("/info")
    data = response.json()
    assert data == {