### `pydantic-settings` installieren { #install-pydantic-settings }

Stellen Sie zunächst sicher, dass Sie Ihre [virtuelle Umgebung](../virtual-environments.md){.internal-link target=_blank} erstellt und aktiviert haben, und installieren Sie dann das Package `pydantic-settings`:

<div class="termy">

```console
$ pip install pydantic-settings
---> 100%
```

</div>

        with:
          version: "0.4.15"
          enable-cache: true
          cache-dependency-glob: |
            requirements**.txt
            pyproject.toml
      - name: Install docs extras
        run: uv pip install -r requirements-docs.txt
      - name: Export Language Codes
        id: show-langs
        run: |
          echo "langs=$(python ./scripts/docs.py langs-json)" >> $GITHUB_OUTPUT

  build-docs:

      - name: Setup uv
        uses: astral-sh/setup-uv@v7
        with:
          cache-dependency-glob: |
            requirements**.txt
            pyproject.toml
      - name: Install Dependencies
        run: uv pip install -r requirements-github-actions.txt -r requirements-translations.txt
      - name: Export Language Codes
        id: show-langs
        run: |

        »»»

    Source (English):

        «««
        # Install Packages { #install-packages }
        »»»

    Translate with (German):

        «««
        # Pakete installieren { #install-packages }
        »»»

    Do NOT translate with (German):

        «««
        # Installieren Sie Pakete { #install-packages }
        »»»

    Source (English):

        «««

        with:
          version: "0.4.15"
          enable-cache: true
          cache-dependency-glob: |
            requirements**.txt
            pyproject.toml
      - name: Install Dependencies
        run: uv pip install -r requirements-tests.txt
      - run: mkdir coverage
      - name: Test
        if: matrix.codspeed != 'codspeed'
        run: bash scripts/test.sh
        env:

If you don't want to include the `standard` optional dependencies, you can install with `pip install fastapi` instead of `pip install "fastapi[standard]"`.

### Without `fastapi-cloud-cli` { #without-fastapi-cloud-cli }

If you want to install FastAPI with the standard dependencies but without the `fastapi-cloud-cli`, you can install with `pip install "fastapi[standard-no-fastapi-cloud-cli]"`.

        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

If you don't want to include the `standard` optional dependencies, you can install with `pip install fastapi` instead of `pip install "fastapi[standard]"`.

### Without `fastapi-cloud-cli`

If you want to install FastAPI with the standard dependencies but without the `fastapi-cloud-cli`, you can install with `pip install "fastapi[standard-no-fastapi-cloud-cli]"`.

### Additional Optional Dependencies

                "To install, run: pip install email-validator"
            )
            return str(v)

        @classmethod
        def _validate(cls, __input_value: Any, _: Any) -> str:
            logger.warning(
                "email-validator not installed, email fields will be treated as str.\n"
                "To install, run: pip install email-validator"
            )

Wenn Sie die `standard` optionalen Abhängigkeiten nicht einschließen möchten, können Sie mit `pip install fastapi` statt `pip install "fastapi[standard]"` installieren.

### Ohne `fastapi-cloud-cli` { #without-fastapi-cloud-cli }

Wenn Sie FastAPI mit den Standardabhängigkeiten, aber ohne das `fastapi-cloud-cli` installieren möchten, können Sie mit `pip install "fastapi[standard-no-fastapi-cloud-cli]"` installieren.