- name: Question or Problem
    about: Ask a question or ask about a problem in GitHub Discussions.
    url: https://github.com/tiangolo/fastapi/discussions/categories/questions
  - name: Feature Request
    about: To suggest an idea or ask about a feature, please start with a question saying what you would like to achieve. There might be a way to do it already.
    url: https://github.com/tiangolo/fastapi/discussions/categories/questions

    # to support it as a first class "feature"
    assert is_bytes_sequence_annotation(Union[List[str], List[bytes]])


def test_is_uploadfile_sequence_annotation():
    # For coverage
    # TODO: in theory this would allow declaring types that could be lists of UploadFile
    # and other types, but I'm not even sure it's a good idea to support it as a first
    # class "feature"

It is also commonly used for other applications that don't necessarily need a database, user management, or any of the many features that come pre-built in Django. Although many of these features can be added with plug-ins.

This decoupling of parts, and being a "microframework" that could be extended to cover exactly what is needed was a key feature that I wanted to keep.

Trong lần khảo sát cuối cùng dành cho các lập trình viên Python, đã rõ ràng <a href="https://www.jetbrains.com/research/python-developers-survey-2017/#tools-and-features" class="external-link" target="_blank">rằng đa số các lập trình viên sử dụng tính năng "autocompletion"</a>.

* Ask a **question** or ask about a **problem**.
* Suggest a new **feature**.

**Note**: if you do it, then I'm going to ask you to also help others. 😉

## Review Pull Requests

You can help me review pull requests from others.

Again, please try your best to be kind. 🤗

Alejandra <******@****.***> 1711071731 -0500

The hierarchy is like:

* **Uvicorn**: an ASGI server
    * **Starlette**: (uses Uvicorn) a web microframework
        * **FastAPI**: (uses Starlette) an API microframework with several additional features for building APIs, with data validation, etc.

* **Uvicorn**:

# Advanced Security

## Additional Features

There are some extra features to handle security apart from the ones covered in the [Tutorial - User Guide: Security](../../tutorial/security/index.md){.internal-link target=_blank}.

!!! tip
    The next sections are **not necessarily "advanced"**.

    And it's possible that for your use case, the solution is in one of them.

## Read the Tutorial first

# About FastAPI versions

**FastAPI** is already being used in production in many applications and systems. And the test coverage is kept at 100%. But its development is still moving quickly.

New features are added frequently, bugs are fixed regularly, and the code is still continuously improving.

✋️ 🕐❔ 👆 🏃 ⚫️ 🌐 💖 👉, 👆 🔜 🕴 👀 📃 👈 ⏪ 💬.

🔜 ➡️ 💬 👈 👆 💚 🚮 ✍ 📄 [⚒](features.md){.internal-link target=_blank}.

* 📁 📁:

```
docs/en/docs/features.md
```

* 📋 ⚫️ ⚫️❔ 🎏 🗺 ✋️ 🇪🇸 👆 💚 💬, ✅:

```
docs/es/docs/features.md
```

!!! tip
    👀 👈 🕴 🔀 ➡ & 📁 📛 🇪🇸 📟, ⚪️➡️ `en` `es`.

* 🔜 📂 ⬜ 📁 📁 🇪🇸:

```