</div>

A similar process would apply to any other ASGI server program.

/// tip

By adding the `standard`, Uvicorn will install and use some recommended extra dependencies.

That including `uvloop`, the high-performance drop-in replacement for `asyncio`, that provides the big concurrency performance boost.

When you install FastAPI with something like `pip install "fastapi[standard]"` you already get `uvicorn[standard]` as well.

///

    // in the opposite order from how they were added so we need to reverse the list to fulfill our
    // contract.
    // This is somewhat annoying, but turns out to be very fast in practice. Alternatively, we could
    // drop the contract on the method that enforces this queue like behavior since depending on it
    // is likely to be a bug anyway.

    // N.B. All writes to the list and the next pointers must have happened before the above

func (w *Walker) export(pkg *apiPackage) {
	if verbose {
		log.Println(pkg)
	}
	pop := w.pushScope("pkg " + pkg.Path())
	w.current = pkg
	w.collectDeprecated()
	scope := pkg.Scope()
	for _, name := range scope.Names() {
		if token.IsExported(name) {
			w.emitObj(scope.Lookup(name))
		}
	}
	pop()
}

func set(items []string) map[string]bool {
	s := make(map[string]bool)

{* ../../docs_src/path_params/tutorial005.py hl[16] *}

### Testen Sie es in der API-Dokumentation

Weil die erlaubten Werte für den *Pfad-Parameter* nun vordefiniert sind, kann die interaktive Dokumentation sie als Auswahl-Drop-Down anzeigen:

<img src="/img/tutorial/path-params/image03.png">

### Mit Python-*<abbr title="Enumeration – Aufzählung">Enums</abbr>* arbeiten

	PMXVI8GER4 VS1, VS2, $1, $2, $3, A1     // 07903012ec811018
	PMXVI8GER4PP VS1, VS2, $1, $2, $3, A1   // 07903012ec811010
	PMXVI8GER4SPP VS1, VS2, $1, $2, $3, A1  // 07903012ec811318
	PNOP                                    // 0700000000000000
	PSTB R1, $1, 12345678(R2)               // 061000bc9822614e
	PSTD R1, $1, 12345678(R2)               // 041000bcf422614e

    executor.execute(task);
    assertEquals(1, numCalls.get());
  }

  /*
   * Under Android, MyError propagates up and fails the test?
   *
   * TODO(b/218700094): Does this matter to prod users, or is it just a feature of our testing
   * environment? If the latter, maybe write a custom Executor that avoids failing the test when it
   * sees an Error?
   */
  @AndroidIncompatible

* `/users/{user_id}/activate`
* `/items/pro/`

그 다음 각각에 대해 그저 의존성과 하위 의존성을 사용하여 다른 권한 요구 사항을 추가할 수 있을 겁니다:

```mermaid
graph TB

current_user(["current_user"])
active_user(["active_user"])
admin_user(["admin_user"])
paying_user(["paying_user"])

public["/items/public/"]
private["/items/private/"]
activate_user["/users/{user_id}/activate"]
pro_items["/items/pro/"]

current_user --> active_user

    // not supported by Android because the underlying implementation from
    // harmony follows the definition from rfc 1034 page 10 for alternative
    // subject names. This causes the code to drop all alternative subjects.
    assertThat(verifier.verify("bar.com", session)).isTrue()
    assertThat(verifier.verify("a.bar.com", session)).isFalse()
    assertThat(verifier.verify("a.\u82b1\u5b50.co.jp", session)).isFalse()

        val fieldName = cachedHeaders.name(index)
        val value = cachedHeaders.value(index)
        if ("Warning".equals(fieldName, ignoreCase = true) && value.startsWith("1")) {
          // Drop 100-level freshness warnings.
          continue
        }
        if (isContentSpecificHeader(fieldName) ||
          !isEndToEnd(fieldName) ||
          networkHeaders[fieldName] == null
        ) {

        {
            "url": "/api/v1"
        },
        {
            "url": "https://stag.example.com",
            "description": "Staging environment"
        },
        {
            "url": "https://prod.example.com",
            "description": "Production environment"
        }
    ],
    "paths": {
            // More stuff here
    }
}
```

/// tip