<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>commons-logging</groupId>
  <artifactId>commons-logging</artifactId>
  <name>Logging</name>
  <version>1.0.3</version>
  <description>Commons Logging</description>
  <url>http://jakarta.apache.org/commons/logging/</url>
  <inceptionYear>2001</inceptionYear>
  <build />
  <dependencies>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>

            <link>http://jakarta.apache.org/commons/collections/apidocs-COLLECTIONS_3_0/</link>
            <link>http://jakarta.apache.org/commons/dbcp/apidocs/</link>
            <link>http://jakarta.apache.org/commons/fileupload/apidocs/</link>
            <link>http://jakarta.apache.org/commons/httpclient/apidocs/</link>
            <link>http://jakarta.apache.org/commons/logging/apidocs/</link>

                <link>http://jakarta.apache.org/commons/collections/apidocs-COLLECTIONS_3_0/</link>
                <link>http://jakarta.apache.org/commons/dbcp/apidocs/</link>
                <link>http://jakarta.apache.org/commons/fileupload/apidocs/</link>
                <link>http://jakarta.apache.org/commons/httpclient/apidocs/</link>
                <link>http://jakarta.apache.org/commons/logging/apidocs/</link>

7d32e7520b801cabc3dc704d2afe59d020d00c45  /home/projects/maven/repository-staging/to-ibiblio/maven2/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.pom...

    </mailingList>
    <mailingList>
      <name>Commons User List</name>
      <subscribe>commons******@****.***</subscribe>
      <unsubscribe>commons******@****.***</unsubscribe>
      <archive>http://nagoya.apache.org/eyebrowse/SummarizeList?listName=commons******@****.***</archive>
    </mailingList>

b7de43bb310eb1dbfd00a34cec30500fa13cb577  /home/projects/maven/repository-staging/to-ibiblio/maven2/commons-logging/commons-logging/1.0.3/commons-logging-1.0.3.pom...

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**FastAPI** ruft die Klasse `CommonQueryParams` auf. Dadurch wird eine „Instanz“ dieser Klasse erstellt und die Instanz wird als Parameter `commons` an Ihre Funktion überreicht.

## Typannotation vs. `Depends`

Beachten Sie, wie wir `CommonQueryParams` im obigen Code zweimal schreiben:

=== "Python 3.8+"

    ```Python
    commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
    ```

=== "Python 3.8+ nicht annotiert"

```Python hl_lines="19"
{!../../../docs_src/dependencies/tutorial002.py!}
```

**FastAPI** は`CommonQueryParams`クラスを呼び出します。これにより、そのクラスの「インスタンス」が作成され、インスタンスはパラメータ`commons`として関数に渡されます。

## 型注釈と`Depends`

上のコードでは`CommonQueryParams`を２回書いていることに注目してください:

```Python
commons: CommonQueryParams = Depends(CommonQueryParams)
```

以下にある最後の`CommonQueryParams`:

```Python
... = Depends(CommonQueryParams)
```