{* ../../docs_src/stream_data/tutorial002_py310.py ln[30:34] hl[31] *}

/// tip | Tipp

Wenn Sie blockierenden Code aus einer async-Funktion heraus aufrufen müssen, oder eine async-Funktion aus einer blockierenden Funktion, könnten Sie [Asyncer](https://asyncer.tiangolo.com), eine Schwesterbibliothek zu FastAPI, verwenden.

///

### `yield from` { #yield-from }

想只用一個 `str`？或只用一個 `dict`？或直接使用資料庫類別的模型實例？都可以，一樣運作。

你的應用其實沒有真人使用者登入，而是機器人、bot，或其他系統，只持有 access token？同樣沒有問題。

只要用任何你的應用需要的模型、類別或資料庫即可。**FastAPI** 的依賴注入系統都支援。

## 程式碼大小 { #code-size }

這個範例看起來可能有點冗長。記住我們把安全、資料模型、工具函式與*路徑操作*混在同一個檔案中。

但重點在這裡。

安全與依賴注入相關的內容只需要寫一次。

你可以把它設計得再複雜都沒問題，仍然只需在單一位置寫一次，依然具備完整的彈性。

但你可以有成千上萬個端點（*路徑操作*）共用同一套安全系統。

而且它們全部（或你想要的一部分）都可以重用這些依賴，或你建立的其他依賴。

/*
 * This script plugin configures formatting for Java source using Spotless
 * for Gradle. Since the act of formatting existing source can interfere
 * with developers' workflows, we don't automatically format all code
 * (yet). Instead, we maintain a list of projects that are excluded from
 * formatting, until we reach a point where we can comfortably format them
 * in one go without too much disruption.
 *

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect.testing;

import static com.google.common.collect.testing.Helpers.mapEntry;
import static com.google.common.collect.testing.ReflectionFreeAssertThrows.assertThrows;
import static java.util.Arrays.asList;
import static java.util.Collections.emptyMap;

import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.net.URLCodec;
import org.codelibs.core.lang.StringUtil;
import org.lastaflute.web.servlet.filter.LastaPrepareFilter;

import jakarta.servlet.Filter;
import jakarta.servlet.FilterChain;
import jakarta.servlet.FilterConfig;
import jakarta.servlet.ServletContext;

import static java.util.Arrays.asList;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.AbstractCollectionTester;
import com.google.common.collect.testing.MinimalCollection;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import java.util.Collection;

 * limitations under the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.base.Preconditions.checkState;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import static com.google.common.util.concurrent.Futures.immediateFuture;
import static com.google.common.util.concurrent.JdkFutureAdapters.listenInPoolThread;

// Code generated by github.com/tinylib/msgp DO NOT EDIT.

package cmd

import (
	"bytes"
	"testing"

	"github.com/tinylib/msgp/msgp"
)

func TestMarshalUnmarshalBatchJobExpire(t *testing.T) {
	v := BatchJobExpire{}
	bts, err := v.MarshalMsg(nil)
	if err != nil {
		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {

// Code generated by github.com/tinylib/msgp DO NOT EDIT.

package cmd

import (
	"bytes"
	"testing"

	"github.com/tinylib/msgp/msgp"
)

func TestMarshalUnmarshalAccElem(t *testing.T) {
	v := AccElem{}
	bts, err := v.MarshalMsg(nil)
	if err != nil {
		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {

// Code generated by github.com/tinylib/msgp DO NOT EDIT.

package cmd

import (
	"github.com/tinylib/msgp/msgp"
)

// DecodeMsg implements msgp.Decodable
func (z *SiteResyncStatus) DecodeMsg(dc *msgp.Reader) (err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, err = dc.ReadMapHeader()
	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()