headers can be added <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">using the 'X-' prefix</a>.

But if you have custom headers that you want a client in a browser to be able to see, you need to add them to your CORS configurations (read more in [CORS (Cross-Origin Resource Sharing)](../tutorial/cors.md){.internal-link target=_blank}), using the parameter `expose_headers` documented in <a href="https://www.starlette.io/middleware/#corsmiddleware"...

                <mxCell id="90" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;dashed=1;startArrow=none;startFill=0;endArrow=classic;endFill=1;strokeWidth=3;" parent="1" source="101" target="32" edge="1">
                    <mxGeometry relative="1" as="geometry">
                        <mxPoint x="390" y="-190" as="sourcePoint"/>
                        <Array as="points">

主要的教程 [教程 - 用户指南](../tutorial/index.md){.internal-link target=_blank} 应该足以让你了解 **FastAPI** 的所有主要特性。

你会在接下来的章节中了解到其他的选项、配置以及额外的特性。

/// tip

接下来的章节**并不一定是**「高级的」。

而且对于你的使用场景来说，解决方案很可能就在其中。

///

## 先阅读教程

你可能仍会用到 **FastAPI** 主教程 [教程 - 用户指南](../tutorial/index.md){.internal-link target=_blank} 中的大多数特性。

[Unit]
Description=Fess
Documentation=http://fess.codelibs.org/
Wants=network-online.target
After=network-online.target opensearch.service
Requires=opensearch.service

[Service]
Environment=FESS_HOME=${packaging.fess.home.dir}
EnvironmentFile=-${packaging.env.file}

User=${packaging.fess.user}
Group=${packaging.fess.group}

ExecStart=${packaging.fess.bin.dir}/fess

# Connects standard output to /dev/null
StandardOutput=null

하지만 똑같은 편집기 지원을 <a href="https://www.jetbrains.com/pycharm/" class="external-link" target="_blank">PyCharm</a>에서 받을 수 있거나, 대부분의 다른 편집기에서도 받을 수 있습니다:

<img src="/img/tutorial/body/image05.png">

/// tip | "팁"

```Python hl_lines="6-7"
{!../../docs_src/path_params/tutorial001.py!}
```

La valeur du paramètre `item_id` sera transmise à la fonction dans l'argument `item_id`.

Donc, si vous exécutez cet exemple et allez sur <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a>,

        }
        Map<String, Object> target = dataMap;
        for (final Ingester ingester : ingestFactory.getIngesters()) {
            try {
                target = ingester.process(target, paramMap);
            } catch (final Exception e) {
                logger.warn("Failed to process Ingest[{}]", ingester.getClass().getSimpleName(), e);
            }
        }
        return target;
    }

    @Override

Sie sehen die automatische API-Dokumentation für die Hauptanwendung, welche nur deren eigene _Pfadoperationen_ anzeigt:

<img src="/img/tutorial/sub-applications/image01.png">

Öffnen Sie dann die Dokumentation für die Unteranwendung unter <a href="http://127.0.0.1:8000/subapi/docs" class="external-link" target="_blank">http://127.0.0.1:8000/subapi/docs</a>.

**FastAPI** ⏪ ➖ ⚙️ 🏭 📚 🈸 & ⚙️. & 💯 💰 🚧 1️⃣0️⃣0️⃣ 💯. ✋️ 🚮 🛠️ 🚚 🔜.

🆕 ⚒ 🚮 🛎, 🐛 🔧 🛎, & 📟 🔁 📉.

👈 ⚫️❔ ⏮️ ⏬ `0.x.x`, 👉 🎨 👈 🔠 ⏬ 💪 ⚠ ✔️ 💔 🔀. 👉 ⏩ <a href="https://semver.org/" class="external-link" target="_blank">⚛ 🛠️</a> 🏛.

👆 💪 ✍ 🏭 🈸 ⏮️ **FastAPI** ▶️️ 🔜 (&amp; 👆 ✔️ 🎲 🔨 ⚫️ 🕰), 👆 ✔️ ⚒ 💭 👈 👆 ⚙️ ⏬ 👈 👷 ☑ ⏮️ 🎂 👆 📟.

## 📌 👆 `fastapi` ⏬

🥇 👜 👆 🔜 "📌" ⏬ **FastAPI** 👆 ⚙️ 🎯 📰 ⏬ 👈 👆 💭 👷 ☑ 👆 🈸.

# History, Design and Future

Some time ago, <a href="https://github.com/fastapi/fastapi/issues/3#issuecomment-454956920" class="external-link" target="_blank">a **FastAPI** user asked</a>:

> What’s the history of this project? It seems to have come from nowhere to awesome in a few weeks [...]

Here's a little bit of that history.

## Alternatives