///

This is a very simple and short tutorial, if you want to learn about databases in general, about SQL, or more advanced features, go to the <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">SQLModel docs</a>.

## Install `SQLModel` { #install-sqlmodel }

    *   `CategoryCrossing`: create new categorical features representing
        co-occurrences of previous categorical feature values
    *   `Hashing`: the hashing trick, for large-vocabulary categorical features
    *   `Discretization`: turn continuous numerical features into categorical
        features by binning their values
*   Improved **image preprocessing** layers: `CenterCrop`, `Rescaling`

    * 自動バリデーション、シリアライゼーション、対話的なドキュメント、OAuth2 JWTトークンを用いた認証などを含む、<a href="https://fastapi.tiangolo.com/features/" class="external-link" target="_blank">**その他多くの機能**</a>。
* **セキュアなパスワード** ハッシュ化 (デフォルトで)。
* **JWTトークン** 認証。
* **SQLAlchemy** モデル (Flask用の拡張と独立しているので、Celeryワーカーと直接的に併用できます)。
* 基本的なユーザーモデル (任意の修正や削除が可能)。

make sure your changes are consistent with the guidelines and follow the
TensorFlow coding style.

#### General guidelines and philosophy for contribution

*   Include unit tests when you contribute new features, as they help to a)
    prove that your code works correctly, and b) guard against future breaking
    changes to lower the maintenance cost.
*   Bug fixes also generally require unit tests, because the presence of bugs

        I'm asking this because answering questions and solving problems in GitHub is what consumes most of the time.

        I end up not being able to add new features, fix bugs, review pull requests, etc. as fast as I wish because I have to spend too much time handling questions.

        given:
        sampleDoc << """
Nothing to write about
        """

        and:
        releaseNotes << """
<p>The Gradle team is excited to announce Gradle @version@.</p>
<p>This release features <a href="">1</a>, <a href="">2</a>, ... <a href="">n</a>, and more.</p>
<p>We would like to thank the following community members for their contributions to this release of Gradle:</p>

* **Schnell zu entwickeln**: Erhöhen Sie die Geschwindigkeit bei der Entwicklung von Features um etwa 200 % bis 300 %. *
* **Weniger Bugs**: Verringern Sie die von Menschen (Entwicklern) verursachten Fehler um etwa 40 %. *

static final String FEATURE_PROCESS_NAMESPACES = http://xmlpull.org/v1/doc/features.html#process-namespaces; public static final String FEATURE_REPORT_NAMESPACE_ATTRIBUTES = http://xmlpull.org/v1/doc/features.html#report-namespace-prefixes; public static final String FEATURE_PROCESS_DOCDECL = http://xmlpull.org/v1/doc/features.html#process-docdecl; public static final String FEATURE_VALIDATION = http://xmlpull.org/v1/doc/features.html#validation; public abstract void setFeature(String, boolean) throws...

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## **FastAPI**'s `OAuth2PasswordBearer` { #fastapis-oauth2passwordbearer }

**FastAPI** provides several tools, at different levels of abstraction, to implement these security features.

In this example we are going to use **OAuth2**, with the **Password** flow, using a **Bearer** token. We do that using the `OAuth2PasswordBearer` class.

/// info

A "bearer" token is not the only option.