///

The `status_code` parameter receives a number with the HTTP status code.

/// info

`status_code` can alternatively also receive an `IntEnum`, such as Python's <a href="https://docs.python.org/3/library/http.html#http.HTTPStatus" class="external-link" target="_blank">`http.HTTPStatus`</a>.

///

It will:

* Return that status code in the response.

* If you are in a Python version lower than 3.9, import their equivalent version from the `typing` module
* Pass the internal type(s) as "type parameters" using square brackets: `[` and `]`

In Python 3.9 it would be:

```Python
my_list: list[str]
```

In versions of Python before 3.9, it would be:

```Python
from typing import List

my_list: List[str]
```

### What are "Context Managers" { #what-are-context-managers }

"Context Managers" are any of those Python objects that you can use in a `with` statement.

For example, <a href="https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files" class="external-link" target="_blank">you can use `with` to read a file</a>:

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

        ComponentUtil.register(testProcessHelper, "processHelper");

        testFessConfig = new TestFessConfig() {
            @Override
            public String getPythonCommandPath() {
                return "python3";
            }
        };
        ComponentUtil.setFessConfig(testFessConfig);

        testServletContext = new TestServletContext();

`@lru_cache` is part of `functools` which is part of Python's standard library, you can read more about it in the <a href="https://docs.python.org/3/library/functools.html#functools.lru_cache" class="external-link" target="_blank">Python docs for `@lru_cache`</a>.

## Recap { #recap }

author_link: https://coffeebytes.dev/en/authors/eduardo-zepeda/ link: https://coffeebytes.dev/es/python-fastapi-el-mejor-framework-de-python/ title: 'Tutorial de FastAPI, ¿el mejor framework de Python?' Podcasts: English: - author: Real Python author_link: https://realpython.com/ link: https://realpython.com/podcasts/rpp/72/ title: Starting With FastAPI and Examining Python's Import System - Episode 72 - author: Python Bytes FM author_link: https://pythonbytes.fm/ link: https://www.pythonpodcast.com/fasta...

요약하면, 여러분은 매개변수의 타입, 본문 등을 함수 매개변수로서 **한번에** 선언했습니다.

여러분은 현대 표준 파이썬 타입으로 이를 행했습니다.

새로운 문법, 특정 라이브러리의 메소드나 클래스 등을 배울 필요가 없습니다.

그저 표준 **Python** 입니다.

예를 들어, `int`에 대해선:

```Python
item_id: int
```

또는 좀 더 복잡한 `Item` 모델에 대해선:

```Python
item: Item
```

...그리고 단 하나의 선언으로 여러분이 얻는 것은:

* 다음을 포함한 편집기 지원:
    * 자동완성.
    * 타입 검사.
* 데이터 검증:

```

</div>

////

## Read env vars in Python { #read-env-vars-in-python }

You could also create environment variables **outside** of Python, in the terminal (or with any other method), and then **read them in Python**.

For example you could have a file `main.py` with:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip

```

</div>

////

## Omgevingsvariabelen uitlezen in Python

Je kunt omgevingsvariabelen **buiten** Python aanmaken, in de terminal (of met een andere methode) en ze vervolgens **in Python uitlezen**.

Je kunt bijvoorbeeld een bestand `main.py` hebben met:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip

Для создания виртуальной среды вы можете воспользоваться модулем `venv`, который является частью встроенной библиотеки Python.

<div class="termy">

```console
$ python -m venv .venv
```

</div>

/// details | Что делает эта команда?

* `python`: использовать программу под именем `python`
* `-m`: вызывать модуль как скрипт, в следующей инструкции мы скажем какой именно модуль вызвать