```console
// Hier setzen wir die Umgebungsvariable noch nicht
$ python main.py

// Da wir die Umgebungsvariable nicht gesetzt haben, erhalten wir den Defaultwert

Hello World from Python

// Aber wenn wir zuerst eine Umgebungsvariable erstellen
$ export MY_NAME="Wade Wilson"

// Und dann das Programm erneut aufrufen
$ python main.py

// Jetzt kann es die Umgebungsvariable lesen

Hello Wade Wilson from Python

```
.
├── app
│   ├── __init__.py
│   └── main.py
```

`main.py` 파일 안에 **FastAPI** app 을 만들었습니다:


{* ../../docs_src/app_testing/app_a_py310/main.py *}

### 테스트 파일 { #testing-file }

테스트를 위해 `test_main.py`라는 파일을 생성할 수 있습니다. 이 파일은 동일한 Python 패키지(즉, `__init__.py` 파일이 있는 동일한 디렉터리)에 위치할 수 있습니다.

``` hl_lines="5"
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

Файл `main.py`:

{* ../../docs_src/async_tests/app_a_py310/main.py *}

Файл `test_main.py` содержит тесты для `main.py`, теперь он может выглядеть так:

{* ../../docs_src/async_tests/app_a_py310/test_main.py *}

## Запуск тестов { #run-it }

    * New docs at [Dependencies with `yield`](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-with-yield/).
    * Updated database docs [SQL (Relational) Databases: Main **FastAPI** app](https://fastapi.tiangolo.com/tutorial/sql-databases/#main-fastapi-app).
    * PR [#595](https://github.com/tiangolo/fastapi/pull/595).

RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

# (1)!
COPY ./main.py /code/

# (2)!
CMD ["fastapi", "run", "main.py", "--port", "80"]
```

1. Copier le fichier `main.py` directement dans le répertoire `/code` (sans répertoire `./app`).

2. Utiliser `fastapi run` pour servir votre application dans le fichier unique `main.py`.

RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

# (1)!
COPY ./main.py /code/

# (2)!
CMD ["fastapi", "run", "main.py", "--port", "80"]
```

1. Копируем файл `main.py` напрямую в `/code` (без директории `./app`).

2. Используем `fastapi run` для запуска приложения из одного файла `main.py`.

RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

# (1)!
COPY ./main.py /code/

# (2)!
CMD ["fastapi", "run", "main.py", "--port", "80"]
```

1. Copie o arquivo `main.py` para o diretório `/code` diretamente (sem nenhum diretório `./app`).

2. Use `fastapi run` para servir sua aplicação no arquivo único `main.py`.

   *
   * <p>Fingerprint2011() is a form of Murmur2 on strings up to 32 bytes and a form of CityHash for
   * longer strings. It could have been one or the other throughout. The main advantage of the
   * combination is that CityHash has a bunch of special cases for short strings that don't need to
   * be replicated here. The result will never be 0 or 1.
   *

        };
    }

    /**
     * Returns an enumeration of all the keys in this property list, including distinct keys in the default property
     * list if a key of the same name has not already been found from the main properties list.
     *
     * @return an enumeration of all the keys in this property list, including the keys in the default property list.
     */
    public Enumeration<?> propertyNames() {

        };
    }

    /**
     * Returns an enumeration of all the keys in this property list, including distinct keys in the default property
     * list if a key of the same name has not already been found from the main properties list.
     *
     * @return an enumeration of all the keys in this property list, including the keys in the default property list.
     */
    public Enumeration<?> propertyNames() {