uses: astral-sh/setup-uv@v7
        with:
          cache-dependency-glob: |
            requirements**.txt
            pyproject.toml
            uv.lock
      - name: Install Dependencies
        run: |
          uv venv
          uv pip install -r requirements.txt
      - name: Run prek - pre-commit
        id: precommit
        run: uvx prek run --from-ref origin/${GITHUB_BASE_REF} --to-ref HEAD --show-diff-on-failure

Pero en caso de que los necesites para un escenario avanzado, puedes agregar headers personalizados:

{* ../../docs_src/handling_errors/tutorial002_py39.py hl[14] *}

## Instalar manejadores de excepciones personalizados { #install-custom-exception-handlers }

# (2)
WORKDIR /tmp

# (3)
RUN pip install poetry

# (4)
COPY ./pyproject.toml ./poetry.lock* /tmp/

# (5)
RUN poetry export -f requirements.txt --output requirements.txt --without-hashes

# (6)
FROM python:3.9

# (7)
WORKDIR /code

# (8)
COPY --from=requirements-stage /tmp/requirements.txt /code/requirements.txt

# (9)
RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

When you install Python, you might be asked if you want to update the `PATH` environment variable.

//// tab | Linux, macOS

Let's say you install Python and it ends up in a directory `/opt/custompython/bin`.

If you say yes to update the `PATH` environment variable, then the installer will add `/opt/custompython/bin` to the `PATH` environment variable.

<div class="termy">

```console
$ pip install "fastapi[all]"

---> 100%
```

</div>

...これには、コードを実行するサーバーとして使用できる `uvicorn`も含まれます。

/// note | 備考

パーツ毎にインストールすることも可能です。

以下は、アプリケーションを本番環境にデプロイする際に行うであろうものです:

```
pip install fastapi
```

また、サーバーとして動作するように`uvicorn` をインストールします:

```
pip install "uvicorn[standard]"
```

そして、使用したい依存関係をそれぞれ同様にインストールします。

        uses: actions/setup-java@v5
        with:
          distribution: 'zulu'
          java-version: 17

      - uses: actions/setup-python@v6
        with:
          python-version: 3.x

      - run: pip install mkdocs-material mkdocs-redirects

      - name: Generate Docs
        run: ./test_docs.sh

      - uses: actions/upload-artifact@v6
        with:
          name: docs

        # On Windows:
        C:\> wmic os get Caption, Version, BuildNumber, OSArchitecture
        # paste output here
        ```

        </details>

  - type: textarea
    id: installer
    attributes:
      label: Install tools
      value: |
        <details>

        </details>

  - type: textarea
    id: runtime
    attributes:
      label: Container runtime (CRI) and version (if applicable)

          <artifactId>maven-deploy-plugin</artifactId>
          <version>0.1</version>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-install-plugin</artifactId>
          <version>0.1</version>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-jar-plugin</artifactId>

def test_fastapi_cli_not_installed():
    with patch.object(fastapi.cli, "cli_main", None):
        with pytest.raises(RuntimeError) as exc_info:
            fastapi.cli.main()

Para usar `EmailStr`, primero instala <a href="https://github.com/JoshData/python-email-validator" class="external-link" target="_blank">`email-validator`</a>.

Asegúrate de crear un [entorno virtual](../virtual-environments.md){.internal-link target=_blank}, activarlo, y luego instalarlo, por ejemplo:

```console
$ pip install email-validator
```

o con:

```console
$ pip install "pydantic[email]"
```

///