### 🚚 `root_path`

🏆 👉, 👆 💪 ⚙️ 📋 ⏸ 🎛 `--root-path` 💖:

<div class="termy">

```console
$ uvicorn main:app --root-path /api/v1

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

🚥 👆 ⚙️ Hypercorn, ⚫️ ✔️ 🎛 `--root-path`.

!!! note "📡 ℹ"
    🔫 🔧 🔬 `root_path` 👉 ⚙️ 💼.

  @Override
  public ImmutableRangeSet<C> subRangeSet(Range<C> range) {
    if (!isEmpty()) {
      Range<C> span = span();
      if (range.encloses(span)) {
        return this;
      } else if (range.isConnected(span)) {
        return new ImmutableRangeSet<>(intersectRanges(range));
      }
    }
    return of();
  }

  /**

}

func (w *deferredResponseWriter) Write(p []byte) (n int, err error) {
	ctx := w.ctx
	span := tracing.SpanFromContext(ctx)
	// This Step usually wraps in-memory object serialization.
	span.AddEvent("About to start writing response", attribute.Int("size", len(p)))

	firstWrite := !w.hasWritten
	defer func() {
		if err != nil {
			span.AddEvent("Write call failed",
				attribute.String("writer", fmt.Sprintf("%T", w.w)),

		fmt.Fprintf(os.Stderr, "go: may not use -race and -msan simultaneously\n")
		base.SetExitStatus(2)
		base.Exit()
	}
	if cfg.BuildRace && cfg.BuildASan {
		fmt.Fprintf(os.Stderr, "go: may not use -race and -asan simultaneously\n")
		base.SetExitStatus(2)
		base.Exit()
	}
	if cfg.BuildMSan && cfg.BuildASan {
		fmt.Fprintf(os.Stderr, "go: may not use -msan and -asan simultaneously\n")
		base.SetExitStatus(2)

		return undUpper
	}
	return &simpleCaser{f: f, span: upperFunc[i].span}
}

func makeLower(t language.Tag, o options) transform.SpanningTransformer {
	_, i, _ := matcher.Match(t)
	f := lowerFunc[i]
	if f == nil {
		if o.ignoreFinalSigma {
			return undLowerIgnoreSigma
		}
		return undLower
	}
	if o.ignoreFinalSigma {
		return &simpleCaser{f: f, span: isLower}
	}
	return &lowerCaser{
		first:   f,

plugins: forked-1.1.3, xdist-1.31.0, cov-2.8.1
collected 6 items

---> 100%

test_main.py <span style="color: green; white-space: pre;">......                            [100%]</span>

<span style="color: green;">================= 1 passed in 0.03s =================</span>
```

ローカル開発中に、サイトを構築して変更がないかチェックするスクリプトがあり、ライブリロードされます:

<div class="termy">

```console
$ python ./scripts/docs.py live

<span style="color: green;">[INFO]</span> Serving on http://127.0.0.1:8008
<span style="color: green;">[INFO]</span> Start watching changes
<span style="color: green;">[INFO]</span> Start detecting changes
```

</div>

ドキュメントは、`http://127.0.0.1:8008`で提供します。

### Providing the `root_path`

To achieve this, you can use the command line option `--root-path` like:

<div class="termy">

```console
$ fastapi run main.py --root-path /api/v1

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

If you use Hypercorn, it also has the option `--root-path`.

!!! note "Technical Details"

// A FileSyntax represents an entire go.mod file.
type FileSyntax struct {
	Name string // file path
	Comments
	Stmt []Expr
}

func (x *FileSyntax) Span() (start, end Position) {
	if len(x.Stmt) == 0 {
		return
	}
	start, _ = x.Stmt[0].Span()
	_, end = x.Stmt[len(x.Stmt)-1].Span()
	return start, end
}

// addLine adds a line containing the given tokens to the file.
//

      if (rangeMap.asMapOfRanges().isEmpty()) {
        return;
      }
      Range<K> span = rangeMap.span();
      checkArgument(
          subRange.encloses(span),
          "Cannot putAll rangeMap with span %s into a subRangeMap(%s)",
          span,
          subRange);
      TreeRangeMap.this.putAll(rangeMap);
    }

    @Override
    public void clear() {