| 🔢 | 🆎 | 📛 |
|------------|------|-------------|
| `title` | `str` | 📛 🛠️. |
| `description` | `str` | 📏 📛 🛠️. ⚫️ 💪 ⚙️ ✍. |
| `version` | `string` | ⏬ 🛠️. 👉 ⏬ 👆 👍 🈸, 🚫 🗄. 🖼 `2.5.0`. |
| `terms_of_service` | `str` | 📛 ⚖ 🐕‍🦺 🛠️. 🚥 🚚, 👉 ✔️ 📛. |

=== "Python 3.8+"

    ```Python hl_lines="9-13  15-16  20"
    {!> ../../../docs_src/response_model/tutorial003_01.py!}
    ```

With this, we get tooling support, from editors and mypy as this code is correct in terms of types, but we also get the data filtering from FastAPI.

How does this work? Let's check that out. 🤓

### Type Annotations and Tooling

First let's see how editors, mypy and other tools would see this.

| `description` | `str` | A short description of the API. It can use Markdown. |
| `version` | `string` | The version of the API. This is the version of your own application, not of OpenAPI. For example `2.5.0`. |
| `terms_of_service` | `str` | A URL to the Terms of Service for the API. If provided, this has to be a URL. |

<img class="shadow" src="/img/deployment/concepts/image01.png">

---

Now that we know the difference between the terms **process** and **program**, let's continue talking about deployments.

## Running on Startup

<div class="termy">

```console
$ python -m venv env
```

</div>

That will create a directory `./env/` with the Python binaries, and then you will be able to install packages for that local environment.

### Activate the environment

Activate the new environment with:

=== "Linux, macOS"

    <div class="termy">

    ```console
    $ source ./env/bin/activate

👆 💪 ✍ 🕹 🌐 📁 ⚙️ 🐍 `venv` 🕹:

<div class="termy">

```console
$ python -m venv env
```

</div>

👈 🔜 ✍ 📁 `./env/` ⏮️ 🐍 💱 &amp; ⤴️ 👆 🔜 💪 ❎ 📦 👈 ❎ 🌐.

### 🔓 🌐

🔓 🆕 🌐 ⏮️:

=== "💾, 🇸🇻"

    <div class="termy">

    ```console
    $ source ./env/bin/activate
    ```

    </div>

=== "🚪 📋"

    <div class="termy">

    ```console

# First Steps

The simplest FastAPI file could look like this:

```Python
{!../../../docs_src/first_steps/tutorial001.py!}
```

Copy that to a file `main.py`.

Run the live server:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

=== "Uvicorn"

    <div class="termy">

    ```console
    $ uvicorn main:app --host 0.0.0.0 --port 80

    <span style="color: green;">INFO</span>:     Uvicorn running on http://0.0.0.0:80 (Press CTRL+C to quit)
    ```

    </div>

=== "Hypercorn"

    <div class="termy">

    ```console
    $ hypercorn main:app --bind 0.0.0.0:80

Усі блоки коду можна скопіювати та використовувати безпосередньо (це фактично перевірені файли Python).

Щоб запустити будь-який із прикладів, скопіюйте код у файл `main.py` і запустіть `uvicorn` за допомогою:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

Para rodar qualquer um dos exemplos, copie o codigo para um arquivo `main.py`, e inicie o `uvivorn` com:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)