Eu vou mostrar um exemplo depois usando Poetry em uma seção abaixo. 👇

///

### Criando o Código do **FastAPI**

* Crie um diretório `app` e entre nele.
* Crie um arquivo vazio `__init__.py`.
* Crie um arquivo `main.py` com:

```Python
from typing import Optional

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():

///

## Importe `File`

Importe `File` e `UploadFile` de `fastapi`:

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[3] *}

## Definir Parâmetros `File`

Crie parâmetros de arquivo da mesma forma que você faria para `Body` ou `Form`:

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[9] *}

/// info | Informação

`File` é uma classe que herda diretamente de `Form`.

 * </tr>
 * <tr>
 * <td >
 *
 * <pre>
 * new SmbNamedPipe("smb://server/IPC$/PIPE/foo", SmbNamedPipe.PIPE_TYPE_RDWR | SmbNamedPipe.PIPE_TYPE_CALL, context);
 * </pre>
 *
 * </td>
 * <td>
 * Open the Named Pipe foo for reading and writing. The pipe will behave like the <code>CallNamedPipe</code> interface.
 * </td>
 * </tr>
 * <tr>
 * <td >
 *
 * <pre>

{* ../../docs_src/body_nested_models/tutorial004_py310.py hl[18] *}

Це означатиме, що  **FastAPI**  очікуватиме тіло запиту такого вигляду:

```JSON
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2,
    "tags": ["rock", "metal", "bar"],
    "image": {
        "url": "http://example.com/baz.jpg",
        "name": "The Foo live"
    }
}
```

 * Instances of {@link BeanDesc} are obtained from {@link BeanDescFactory}.
 * </p>
 *
 * <pre>
 * BeanDesc beanDesc = BeanDescFactory.getBeanDesc(Foo.class);
 * </pre>
 * <p>
 * From the obtained {@link BeanDesc}, you can retrieve metadata of the properties, fields, constructors, and methods of the target JavaBeans.
 * </p>
 *
 * <pre>
 * for (PropertyDesc propertyDesc : beanDesc.getPropertyDescs()) {

import org.jspecify.annotations.Nullable;

/**
 * Tester for equals() and hashCode() methods of a class.
 *
 * <p>The simplest use case is:
 *
 * <pre>
 * new EqualsTester().addEqualityGroup(foo).testEquals();
 * </pre>
 *
 * <p>This tests {@code foo.equals(foo)}, {@code foo.equals(null)}, and a few other operations.
 *

${packaging.scripts.header}

#
# This script is executed in the pre-installation phase
#
#   On Debian,
#       $1=install : indicates an new install
#       $1=upgrade : indicates an upgrade
#
#   On RedHat,
#       $1=1       : indicates an new install
#       $1=2       : indicates an upgrade



# Sets the default values for fess variables used in this script
FESS_USER="${packaging.fess.user}"
FESS_GROUP="${packaging.fess.group}"

Swagger UI lidará com isso nos bastidores para você, mas ele precisa desse auxiliar de "redirecionamento".

///

### Criar uma *operação de rota* para testar

Agora, para poder testar se tudo funciona, crie uma *operação de rota*:

{* ../../docs_src/custom_docs_ui/tutorial001.py hl[36:38] *}

### Teste

* ⬆ [pre-commit.ci] pre-commit autoupdate. PR [#13634](https://github.com/fastapi/fastapi/pull/13634) by [@pre-commit-ci[bot]](https://github.com/apps/pre-commit-ci).
* ⬆ [pre-commit.ci] pre-commit autoupdate. PR [#13619](https://github.com/fastapi/fastapi/pull/13619) by [@pre-commit-ci[bot]](https://github.com/apps/pre-commit-ci).

        this.totalAllocated = new AtomicLong();
        this.totalReleased = new AtomicLong();

        // Pre-allocate buffer pool
        initializeBufferPool();
    }

    /**
     * Initialize the buffer pool with pre-allocated regions
     */
    private void initializeBufferPool() {
        // Allocate send buffers
        for (int i = 0; i < initialSendBuffers; i++) {