//   - github.com/puzpuzpuz/xsync/v2
//   - github.com/puzpuzpuz/xsync/v3
//   - github.com/segmentio/parquet-go
//   - github.com/parquet-go/parquet-go
//   - github.com/authzed/spicedb
//   - github.com/pingcap/badger
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname memhash
func memhash(p unsafe.Pointer, h, s uintptr) uintptr

// memhash32 should be an internal detail,

ckdriver":{"configOverride":{},"enabled":false,"logging":false,"monitoring":false,"topology":false}}},"tracing":{"enabled":false,"ingress":{"enabled":false},"jaeger":{"accessMode":"ReadWriteMany","enabled":false,"hub":"docker.io/jaegertracing","memory":{"max_traces":50000},"namespace":"istio-system","persist":false,"spanStorageType":"badger","storageClassName":"","tag":"1.20"},"nodeSelector":{},"opencensus":{"exporters":{"stackdriver":{"enable_tracing":true}},"hub":"docker.io/omnition","resource...

ckdriver":{"configOverride":{},"enabled":false,"logging":false,"monitoring":false,"topology":false}}},"tracing":{"enabled":false,"ingress":{"enabled":false},"jaeger":{"accessMode":"ReadWriteMany","enabled":false,"hub":"docker.io/jaegertracing","memory":{"max_traces":50000},"namespace":"istio-system","persist":false,"spanStorageType":"badger","storageClassName":"","tag":"1.20"},"nodeSelector":{},"opencensus":{"exporters":{"stackdriver":{"enable_tracing":true}},"hub":"docker.io/omnition","resource...

ckdriver":{"configOverride":{},"enabled":false,"logging":false,"monitoring":false,"topology":false}}},"tracing":{"enabled":false,"ingress":{"enabled":false},"jaeger":{"accessMode":"ReadWriteMany","enabled":false,"hub":"docker.io/jaegertracing","memory":{"max_traces":50000},"namespace":"istio-system","persist":false,"spanStorageType":"badger","storageClassName":"","tag":"1.20"},"nodeSelector":{},"opencensus":{"exporters":{"stackdriver":{"enable_tracing":true}},"hub":"docker.io/omnition","resource...

ckdriver":{"configOverride":{},"enabled":false,"logging":false,"monitoring":false,"topology":false}}},"tracing":{"enabled":false,"ingress":{"enabled":false},"jaeger":{"accessMode":"ReadWriteMany","enabled":false,"hub":"docker.io/jaegertracing","memory":{"max_traces":50000},"namespace":"istio-system","persist":false,"spanStorageType":"badger","storageClassName":"","tag":"1.20"},"nodeSelector":{},"opencensus":{"exporters":{"stackdriver":{"enable_tracing":true}},"hub":"docker.io/omnition","resource...

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# Bigger Applications - Multiple Files

If you are building an application or a web API, it's rarely the case that you can put everything on a single file.

**FastAPI** provides a convenience tool to structure your application while keeping all the flexibility.

!!! info
    If you come from Flask, this would be the equivalent of Flask's Blueprints.

## An example file structure

Let's say you have a file structure like this:

```
.
├── app

* 📤 📁 `app/internal/` ⏮️ ➕1️⃣ 📁 `__init__.py`, ⚫️ ➕1️⃣ "🐍 📦": `app.internal`.
*  & 📁 `app/internal/admin.py` ➕1️⃣ 🔁: `app.internal.admin`.

<img src="/img/tutorial/bigger-applications/package.svg">

🎏 📁 📊 ⏮️ 🏤:

```
.
├── app                  # "app" is a Python package
│   ├── __init__.py      # this file makes "app" a "Python package"

* 还有一个子目录 `app/internal/` 包含另一个 `__init__.py` 文件，因此它是又一个「Python 子包」：`app.internal`。
* `app/internal/admin.py` 是另一个子模块：`app.internal.admin`。

<img src="https://fastapi.tiangolo.com/img/tutorial/bigger-applications/package.svg">

带有注释的同一文件结构：

```
.
├── app                  # 「app」是一个 Python 包
│   ├── __init__.py      # 这个文件使「app」成为一个 Python 包
│   ├── main.py          # 「main」模块，例如 import app.main