Rozmów w systemach czatu nie można tak łatwo przeszukiwać, jak na GitHubie, więc pytania i odpowiedzi mogą zaginąć w rozmowie. A tylko te na GitHubie liczą się do zostania [Ekspertem FastAPI](fastapi-people.md#fastapi-experts){.internal-link target=_blank}, więc najprawdopodobniej otrzymasz więcej uwagi na GitHubie.

Uma <a href="https://pt.wikipedia.org/wiki/Variável_de_ambiente" class="external-link" target="_blank">variável de ambiente</a> (abreviada em inglês para "env var") é uma variável definida fora do código Python, no sistema operacional, e pode ser lida pelo seu código Python (ou por outros programas).

Você pode criar e utilizar variáveis de ambiente no terminal, sem precisar utilizar Python:

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console

## Quraşdırma

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>

Tətbiqimizi əlçatan etmək üçün bizə <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> və ya <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a> kimi ASGI server lazımdır.

<div class="termy">

/// note | "Nota"

Você não necessariamente precisa adicionar diferentes escopos em diferentes lugares.

Nós estamos fazendo isso aqui para demonstrar como o **FastAPI** lida com escopos declarados em diferentes níveis.

///

//// tab | Python 3.10+

```Python hl_lines="5  140  171"
{!> ../../docs_src/security/tutorial005_an_py310.py!}
```

////

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