```Python
    from app.routers import items, users
    ```

    Um mehr über Python-Packages und -Module zu erfahren, lesen Sie <a href="https://docs.python.org/3/tutorial/modules.html" class="external-link" target="_blank">die offizielle Python-Dokumentation über Module</a>.

### Namenskollisionen vermeiden

!!! warning
    If you do this, you have to make sure each one of your *path operation functions* has a unique name.

    Even if they are in different modules (Python files).

## Exclude from OpenAPI

To exclude a *path operation* from the generated OpenAPI schema (and thus, from the automatic documentation systems), use the parameter `include_in_schema` and set it to `False`:

    ├── __init__.py
    ├── crud.py
    ├── database.py
    ├── main.py
    ├── models.py
    └── schemas.py
```

The file `__init__.py` is just an empty file, but it tells Python that `sql_app` with all its modules (Python files) is a package.

Now let's see what each file/module does.

## Install `SQLAlchemy`

First you need to install `SQLAlchemy`:

<div class="termy">

```console
$ pip install sqlalchemy

    ```

    🥈 ⏬ "🎆 🗄":

    ```Python
    from app.routers import items, users
    ```

    💡 🌅 🔃 🐍 📦 &amp; 🕹, ✍ <a href="https://docs.python.org/3/tutorial/modules.html" class="external-link" target="_blank">🛂 🐍 🧾 🔃 🕹</a>.

### ❎ 📛 💥

👥 🏭 🔁 `items` 🔗, ↩️ 🏭 🚮 🔢 `router`.

👉 ↩️ 👥 ✔️ ➕1️⃣ 🔢 📛 `router` 🔁 `users`.

🚥 👥 ✔️ 🗄 1️⃣ ⏮️ 🎏, 💖: