And then, right after the `yield`, we unload the model. This code will be executed **after** the application **finishes handling requests**, right before the *shutdown*. This could, for example, release resources like memory or a GPU.

!!! tip

The **Advanced User Guide**, builds on this, uses the same concepts, and teaches you some extra features.

But you should first read the **Tutorial - User Guide** (what you are reading right now).

درجہ بندی کی طرح ہے:

<ul style="direction: rtl;">
    <li><div style="text-align: right;">ASGI :<b>Uvicorn</b> سرور</div></li>
    <ul>
        <li><div style="text-align: right;"><b>Starlette</b>:  (Uvicorn استعمال کرتا ہے) ایک ویب مائیکرو فریم ورک </div></li>
        <ul>

At that point, by noticing that the server took some microseconds longer to send the "Incorrect username or password" response, the attackers will know that they got _something_ right, some of the initial letters were right.

And then they can try again knowing that it's probably something more similar to `stanleyjobsox` than to `johndoe`.

#### A "professional" attack

## Do not Separate Schemas

Now, there are some cases where you might want to have the **same schema for input and output**.

Probably the main use case for this is if you already have some autogenerated client code/SDKs and you don't want to update all the autogenerated client code/SDKs yet, you probably will want to do it at some point, but maybe not right now.

The benefit of raising an exception over `return`ing a value will be more evident in the section about Dependencies and Security.

    </div>
  </div>
  <div id="announce-right" style="position: relative;">
    <div class="item">

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

### Download the files

Download the static files needed for the docs and put them on that `static/` directory.

You can probably right-click each link and select an option similar to `Save link as...`.

**Swagger UI** uses the files:

    content: 'bash';
    position: absolute;
    color: var(--color-text-subtle);
    top: 5px;
    left: 0;
    width: 100%;
    text-align: center;
}

a[data-terminal-control] {
    text-align: right;
    display: block;
    color: #aebbff;
}

[data-ty] {
    display: block;
    line-height: 2;
}

[data-ty]:before {
    /* Set up defaults and ensure empty lines are displayed. */
    content: '';

      description: |
        Please add a self-contained, [minimal, reproducible, example](https://stackoverflow.com/help/minimal-reproducible-example) with your use case.

        If I (or someone) can copy it, run it, and see it right away, there's a much higher chance I (or someone) will be able to help you.

      placeholder: |
        from fastapi import FastAPI

        app = FastAPI()


        @app.get("/")
        def read_root():