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

Por baixo dos panos, o código `open("./somefile.txt")` cria um objeto que é chamado de "Gerenciador de Contexto".

Quando o bloco `with` finaliza, ele se certifica de fechar o arquivo, mesmo que tenha ocorrido alguma exceção.

```python
from backend.main import app
```

### `fastapi dev` com path { #fastapi-dev-with-path }

Você também pode passar o path do arquivo para o comando `fastapi dev`, e ele vai deduzir o objeto de aplicação FastAPI a ser usado:

```console
$ fastapi dev main.py
```

Mas você teria que lembrar de passar o path correto toda vez que chamar o comando `fastapi`.

style
su
sub.jp
sucks
sue.fukuoka.jp
suedtirol.it
suginami.tokyo.jp
sugito.saitama.jp
suifu.ibaraki.jp
suita.osaka.jp
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sula.no
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sulu.replit.dev
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sumoto.hyogo.jp
sumoto.kumamoto.jp
sumy.ua
sunagawa.hokkaido.jp
sund.no
sunndal.no
sunnyday.jp

style
su
sub.jp
sucks
sue.fukuoka.jp
suedtirol.it
suginami.tokyo.jp
sugito.saitama.jp
suifu.ibaraki.jp
suita.osaka.jp
sukagawa.fukushima.jp
sukumo.kochi.jp
sula.no
suldal.no
suli.hu
sulu.replit.dev
sumida.tokyo.jp
sumita.iwate.jp
sumomo.ne.jp
sumoto.hyogo.jp
sumoto.kumamoto.jp
sumy.ua
sunagawa.hokkaido.jp
sund.no
sunndal.no
sunnyday.jp

minamiawaji.hyogo.jp
nishinomiya.hyogo.jp
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    By the use of this ointment--one shilling the box--
      Allow me to sell you a couple?'

    `You are old,' said the youth, `and your jaws are too weak
      For anything tougher than suet;
    Yet you finished the goose, with the bones and the beak--
      Pray how did you manage to do it?'

    `In my youth,' said his father, `I took to the law,
      And argued each case with my wife;

    By the use of this ointment--one shilling the box--
      Allow me to sell you a couple?'

    `You are old,' said the youth, `and your jaws are too weak
      For anything tougher than suet;
    Yet you finished the goose, with the bones and the beak--
      Pray how did you manage to do it?'

    `In my youth,' said his father, `I took to the law,
      And argued each case with my wife;