`0.24.0`, a new instance of each middleware class would be created when a new middleware was added. That normally was not a problem, unless the middleware class expected to be created only once, with only one instance, that happened in some cases. This upgrade would solve those cases (thanks [@adriangb](https://github.com/adriangb)! Starlette PR [#2017](https://github.com/encode/starlette/pull/2017)). Now the middleware class instances are created once, right before the first request (the first time the...

```

</div>

/// info | Información

Existen otros formatos y herramientas para definir e instalar dependencias de paquetes.

///

### Crear el Código de **FastAPI** { #create-the-fastapi-code }

* Crea un directorio `app` y entra en él.
* Crea un archivo vacío `__init__.py`.
* Crea un archivo `main.py` con:

```Python
from typing import Union

from fastapi import FastAPI

---> 100%
```

</div>

**Hinweis**: Stellen Sie sicher, dass Sie `"fastapi[standard]"` in Anführungszeichen setzen, damit es in allen Terminals funktioniert.

## Beispiel { #example }

### Erstellung { #create-it }

Erstellen Sie eine Datei `main.py` mit:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


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

			return
		}
	} else {
		// Technically, there is no security argument for verifying the key usage
		// when we don't verify that the certificate has been issued by a trusted CA.
		// Any client can create a certificate with arbitrary key usage settings.
		//
		// However, this check ensures that a certificate with an invalid key usage
		// gets rejected even when we skip certificate verification. This helps

Successfully installed fastapi pydantic
```

</div>

/// info | Информация

Существуют и другие форматы и инструменты для описания и установки зависимостей.

///

### Создать код **FastAPI** { #create-the-fastapi-code }

* Создайте директорию `app` и перейдите в неё.
* Создайте пустой файл `__init__.py`.
* Создайте файл `main.py` со следующим содержимым:

```Python
from typing import Union

	if len(operands) != 2 && len(operands) != 3 {
		p.errorf("expect two or three operands for TEXT")
		return
	}

	// Labels are function scoped. Patch existing labels and
	// create a new label space for this TEXT.
	p.patch()
	p.labels = make(map[string]*obj.Prog)

	// Operand 0 is the symbol name in the form foo(SB).
	// That means symbol plus indirect on SB and no offset.

            # would pass the validation and be returned as is.
            # By being a new field, no inheritance will be passed as is. A new model
            # will always be created.
            # TODO: remove when deprecating Pydantic v1
            self.secure_cloned_response_field: Optional[ModelField] = (
                create_cloned_field(self.response_field)
            )
        else:

	}
	res, err := obj.NewMultipartUpload(context.Background(), "bucket", "key", opts)
	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}
	uploadID := res.UploadID

	// Create a byte array of 5MiB.
	data := bytes.Repeat([]byte("0123456789abcdef"), 5*humanize.MiByte/16)
	completedParts := CompleteMultipartUpload{}
	for i := 1; i <= 10; i++ {
		expectedETaghex := getMD5Hash(data)

# Configure short or long logs
common:short_logs --output_filter=DONT_MATCH_ANYTHING
common:verbose_logs --output_filter=

# Instruction set optimizations
# TODO(gunan): Create a feature in toolchains for avx/avx2 to
#   avoid having to define linux/win separately.
common:avx_linux --copt=-mavx
common:avx_linux --host_copt=-mavx
common:avx_linux --copt="-mf16c"
common:avx_win --copt=/arch:AVX

Successfully installed fastapi pydantic
```

</div>

/// info | Informação

Há outros formatos e ferramentas para definir e instalar dependências de pacotes.

///

### Crie o código do **FastAPI** { #create-the-fastapi-code }

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

```Python
from typing import Union

from fastapi import FastAPI