{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[48:55] hl[51:52,54] *}

### Ler um Único Hero

Podemos **ler** um único `Hero`.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[58:63] hl[60] *}

### Deletar um Hero

Também podemos **deletar** um `Hero`.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[66:73] hl[71] *}

### Executar o App

Você pode executar o app:

Nesse caso, o caminho original `/app` seria servido em `/api/v1/app`.

Embora todo o seu código esteja escrito assumindo que existe apenas `/app`.

{* ../../docs_src/behind_a_proxy/tutorial001.py hl[6] *}

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[48:55] hl[51:52,54] *}

### Read One Hero

We can **read** a single `Hero`.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[58:63] hl[60] *}

### Delete a Hero

We can also **delete** a `Hero`.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[66:73] hl[71] *}

### Run the App

You can run the app:

{*../../docs_src/python_types/tutorial006.py hl[1] *}

Déclarez la variable, en utilisant la syntaxe des deux-points (`:`).

Et comme type, mettez `List`.

Les listes étant un type contenant des types internes, mettez ces derniers entre crochets (`[`, `]`) :

{*../../docs_src/python_types/tutorial006.py hl[4] *}

/// tip | "Astuce"

{* ../../docs_src/python_types/tutorial003.py hl[1] *}

Because the editor knows the types of the variables, you don't only get completion, you also get error checks:

<img src="/img/python-types/image04.png">

Now you know that you have to fix it, convert `age` to a string with `str(age)`:

{* ../../docs_src/python_types/tutorial004.py hl[2] *}

## Declaring types

{* ../../docs_src/security/tutorial005_an_py310.py hl[5,9,13,47,65,106,108:116,122:125,129:135,140,156] *}

Now let's review those changes step by step.

## OAuth2 Security scheme

{* ../../docs_src/first_steps/tutorial001.py hl[7] *}

This is a Python function.

It will be called by **FastAPI** whenever it receives a request to the URL "`/`" using a `GET` operation.

In this case, it is an `async` function.

---

You could also define it as a normal function instead of `async def`:

{* ../../docs_src/first_steps/tutorial003.py hl[7] *}

/// note

In this case, the original path `/app` would actually be served at `/api/v1/app`.

Even though all your code is written assuming there's just `/app`.

{* ../../docs_src/behind_a_proxy/tutorial001.py hl[6] *}

by hand, delete reCaptcha API snippet.");if(!a.formUtils.hasLoadedGrecaptcha&&a('[data-validation~="recaptcha"]',c).length){a.formUtils.hasLoadedGrecaptcha=!0;var e="//www.google.com/recaptcha/api.js?onload=reCaptchaLoaded&render=explicit"+(d.lang?"&hl="+d.lang:""),f=document.createElement("script");f.type="text/javascript",f.async=!0,f.defer=!0,f.src=e,document.getElementsByTagName("body")[0].appendChild(f)}};b.reCaptchaLoaded=function(b){b&&"object"==typeof b&&b.length||(b=a("form")),b.each(function(){var...

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