And be compatible with all of them at the same time.

Create a utility function to hash a password coming from the user.

And another utility to verify if a received password matches the hash stored.

And another one to authenticate and return a user.

=== "Python 3.10+"

* The **database model** would probably need to have a hashed password.

!!! danger
    Never store user's plaintext passwords. Always store a "secure hash" that you can then verify.

    If you don't know, you will learn what a "password hash" is in the [security chapters](security/simple-oauth2.md#password-hashing){.internal-link target=_blank}.

## Multiple models

#!/usr/bin/env bash

set -e
set -x

mypy fastapi
ruff check fastapi tests docs_src scripts

        if: steps.cache.outputs.cache-hit != 'true'
        run: pip install -r requirements-tests.txt
      - name: Install Pydantic v2
        run: pip install "pydantic>=2.0.2,<3.0.0"
      - name: Lint
        run: bash scripts/lint.sh

  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version:
          - "3.12"
          - "3.11"
          - "3.10"
          - "3.9"
          - "3.8"

* При использовании Kubernetes нужно предусмотреть "инициализирующий контейнер", запускаемый до контейнера с приложением.
* Bash-скрипт, выполняющий предварительные шаги, а затем запускающий приложение.
    * При этом Вам всё ещё нужно найти способ - как запускать/перезапускать *такой* bash-скрипт, обнаруживать ошибки и т.п.

!!! tip "Заметка"

### 事前ステップの戦略例

これは**システムを**デプロイする方法に**大きく依存**するだろうし、おそらくプログラムの起動方法や再起動の処理などにも関係してくるでしょう。

考えられるアイデアをいくつか挙げてみます：

* アプリコンテナの前に実行されるKubernetesのInitコンテナ
* 事前のステップを実行し、アプリケーションを起動するbashスクリプト
    * 利用するbashスクリプトを起動／再起動したり、エラーを検出したりする方法は以前として必要になるでしょう。

!!! tip
   <!-- NOTE: the current version of docker.md is outdated compared to English one. -->

    ```

## 🌃

⚙️ 💗 Pydantic 🏷 & 😖 ➡ 🔠 💼.

        run: |
          cd dist/fastapi*/
          pip install -r requirements-tests.txt
      - name: Run source distribution tests
        run: |
          cd dist/fastapi*/
          bash scripts/test.sh
      - name: Build wheel distribution
        run: |
          cd dist
          pip wheel --no-deps fastapi*.tar.gz
      - name: Dump GitHub context
        env:

Here are some possible ideas:

* An "Init Container" in Kubernetes that runs before your app container
* A bash script that runs the previous steps and then starts your application
    * You would still need a way to start/restart *that* bash script, detect errors, etc.

!!! tip

* Generate correct OpenAPI docs for responses with no content. PR [#621](https://github.com/tiangolo/fastapi/pull/621) by [@brotskydotcom](https://github.com/brotskydotcom).
* Remove `$` from Bash code blocks in docs for consistency. PR [#613](https://github.com/tiangolo/fastapi/pull/613) by [@nstapelbroek](https://github.com/nstapelbroek).