```Python hl_lines="5  12-16"
{!> ../../docs_src/security/tutorial002.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="3  10-14"
{!> ../../docs_src/security/tutorial002_py310.py!}
```

////

## ✍ `get_current_user` 🔗

➡️ ✍ 🔗 `get_current_user`.

💭 👈 🔗 💪 ✔️ 🎧-🔗 ❓

`get_current_user` 🔜 ✔️ 🔗 ⏮️ 🎏 `oauth2_scheme` 👥 ✍ ⏭.

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(name="client")
def get_client():
    from docs_src.header_params.tutorial002_py310 import app

    client = TestClient(app)
    return client


@needs_py310
@pytest.mark.parametrize(
    "path,headers,expected_status,expected_response",
    [

This also means that in Python 3.10, you can use `Something | None`:

//// tab | Python 3.10+

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial009_py310.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial009.py!}
```

////

//// tab | Python 3.8+ alternative

```

////

//// tab | Python 3.10 non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="6-7"
{!> ../../docs_src/dependencies/tutorial005_py310.py!}
```

////

//// tab | Python 3.8 non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="8-9"

```

////

//// tab | Python 3.10+ non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="2  74"
{!> ../../docs_src/security/tutorial003_py310.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="4  76"

```

////

//// tab | Python 3.10+ nicht annotiert

/// tip | "Tipp"

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```Python hl_lines="2  74"
{!> ../../docs_src/security/tutorial003_py310.py!}
```

////

//// tab | Python 3.8+ nicht annotiert

/// tip | "Tipp"

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```Python hl_lines="4  76"

{!> ../../docs_src/security/tutorial004.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="6  47  54-55  58-59  68-74"
{!> ../../docs_src/security/tutorial004_py310.py!}
```

////

/// note

🚥 👆 ✅ 🆕 (❌) 💽 `fake_users_db`, 👆 🔜 👀 ❔ #️⃣ 🔐 👀 💖 🔜: `"$2b$12$EixZaYVK1fsbw1ZfbX3OXePaWxn96p36WQoeG6Lruj3vjPGga31lW"`.

///

## 🍵 🥙 🤝

//// tab | Python 3.10+ nicht annotiert

/// tip | "Tipp"

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```Python hl_lines="6  47  54-55  58-59  68-74"
{!> ../../docs_src/security/tutorial004_py310.py!}
```

////

//// tab | Python 3.8+ nicht annotiert

/// tip | "Tipp"

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```

////

//// tab | Python 3.10 nicht annotiert

/// tip | "Tipp"

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```Python hl_lines="6-7"
{!> ../../docs_src/dependencies/tutorial005_py310.py!}
```

////

//// tab | Python 3.8 nicht annotiert

/// tip | "Tipp"

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```Python hl_lines="8-9"

/// tip | Dica

Prefira utilizar a versão `Annotated` se possível.

///

```Python hl_lines="4  8  12  46  64  105  107-115  121-124  128-134  139  155"
{!> ../../docs_src/security/tutorial005_py310.py!}
```

////

//// tab | Python 3.9+ non-Annotated

/// tip | Dica

Prefira utilizar a versão `Annotated` se possível.

///