* <dfn title="auch bekannt als: Serialisierung, Parsen, Marshalling">Konvertierung</dfn> von Eingabedaten: Aus dem Netzwerk kommend, zu Python-Daten und -Typen. Lesen von:
    * JSON.
    * Pfad-Parametern.
    * Query-Parametern.
    * Cookies.
    * Headern.
    * Formularen.
    * Dateien.

/// check

This will give you editor support inside of your function, with error checks, completion, etc.

///

## Data <dfn title="also known as: serialization, parsing, marshalling">conversion</dfn> { #data-conversion }

If you run this example and open your browser at [http://127.0.0.1:8000/items/3](http://127.0.0.1:8000/items/3), you will see a response of:

```JSON
{"item_id":3}
```

* <dfn title="también conocido como: serialización, parsing, marshalling">Conversión</dfn> de datos de entrada: de la red a los datos y tipos de Python. Leyendo desde:
    * JSON.
    * Parámetros de path.
    * Parámetros de query.
    * Cookies.
    * Headers.
    * Formularios.
    * Archivos.

* <dfn title="também conhecido como: serialização, parsing, marshalling">Conversão</dfn> de dados de entrada: vindo da rede para dados e tipos Python. Consegue ler:
    * JSON.
    * Parâmetros de path.
    * Parâmetros query.
    * Cookies.
    * Cabeçalhos.
    * Formulários.
    * Arquivos.

    * JSON.
    * Path parameter'lar.
    * Query parameter'lar.
    * Cookie'ler.
    * Header'lar.
    * Form'lar.
    * File'lar.

    * JSON.
    * Paramètres de chemin.
    * Paramètres de requête.
    * Cookies.
    * En-têtes.
    * Formulaires.
    * Fichiers.

* <dfn title="also known as: serialization, parsing, marshalling">Conversion</dfn> of input data: coming from the network to Python data and types. Reading from:
    * JSON.
    * Path parameters.
    * Query parameters.
    * Cookies.
    * Headers.
    * Forms.
    * Files.

* <dfn title="also known as: serialization, parsing, marshalling">Conversion</dfn> of input data: coming from the network to Python data and types. Reading from:
    * JSON.
    * Path parameters.
    * Query parameters.
    * Cookies.
    * Headers.
    * Forms.
    * Files.

signatures on certificates that use SHA-1 based signature algorithms.

Go 1.24 changes the default value of the [`x509usepolicies`
setting.](/pkg/crypto/x509/#CreateCertificate) from `0` to `1`. When marshalling
certificates, policies are now taken from the
[`Certificate.Policies`](/pkg/crypto/x509/#Certificate.Policies) field rather
than the
[`Certificate.PolicyIdentifiers`](/pkg/crypto/x509/#Certificate.PolicyIdentifiers)

### [Marshmallow](https://marshmallow.readthedocs.io/en/stable/) { #marshmallow }