* <a href="https://www.jetbrains.com/help/pycharm/creating-virtual-environment.html" class="external-link" target="_blank">PyCharm</a>

/// tip | Подсказка

Обычно это нужно сделать только **один раз**, при создании виртуального окружения.

///

## Деактивация виртуального окружения { #deactivate-the-virtual-environment }

* <a href="https://www.jetbrains.com/help/pycharm/creating-virtual-environment.html" class="external-link" target="_blank">PyCharm</a>

/// tip | Tipp

Normalerweise müssen Sie dies nur **einmal** tun, wenn Sie die virtuelle Umgebung erstellen.

///

## Die virtuelle Umgebung deaktivieren { #deactivate-the-virtual-environment }

///

////

Esse comando cria um novo ambiente virtual em um diretório chamado `.venv`.

/// details | `.venv` ou outro nome

Você pode criar o ambiente virtual em um diretório diferente, mas há uma convenção para chamá-lo de `.venv`.

///

## Ative o ambiente virtual { #activate-the-virtual-environment }

///

////

Ese comando crea un nuevo entorno virtual en un directorio llamado `.venv`.

/// details | `.venv` u otro nombre

Podrías crear el entorno virtual en un directorio diferente, pero hay una convención de llamarlo `.venv`.

///

## Activa el Entorno Virtual { #activate-the-virtual-environment }

        return relatedQueryMap.size();
    }

    /**
     * Extracts the virtual host key from a RelatedQuery entity.
     * If the virtual host is blank or null, returns an empty string.
     *
     * @param entity the RelatedQuery entity to extract the host key from
     * @return the virtual host key, or empty string if blank or null
     */
    protected String getHostKey(final RelatedQuery entity) {

    }

    /**
     * Extracts the virtual host key from a RelatedContent entity.
     * If the virtual host is blank or null, returns an empty string.
     * This key is used to organize related content by virtual host.
     *
     * @param entity the RelatedContent entity to extract the host key from
     * @return the virtual host key, or empty string if not specified
     */

/// info

To receive uploaded files and/or form data, first install <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install it, for example:

```console
$ pip install python-multipart
```

///

## Import `File` and `Form` { #import-file-and-form }

/// info | Informação

Para usar o `TestClient`, primeiro instale o <a href="https://www.python-httpx.org" class="external-link" target="_blank">`httpx`</a>.

Certifique-se de criar um [ambiente virtual](../virtual-environments.md){.internal-link target=_blank}, ativá-lo e instalá-lo, por exemplo:

```console
$ pip install httpx
```

///

Importe `TestClient`.

Apenas tenha em mente que quando você ler "servidor" em geral, isso pode se referir a uma dessas duas coisas.

<div class="termy">

```console
$ C:\opt\custompython\bin\python
```

</div>

////

This information will be useful when learning about [Virtual Environments](virtual-environments.md){.internal-link target=_blank}.

## Conclusion { #conclusion }

With this you should have a basic understanding of what **environment variables** are and how to use them in Python.