Це дасть вам підтримку редактора всередині функції з перевірками помилок, автодоповненням тощо.

///

## <dfn title="також відомо як: серіалізація, парсинг, маршалізація">Перетворення</dfn> даних { #data-conversion }

Якщо ви запустите цей приклад і відкриєте у браузері [http://127.0.0.1:8000/items/3](http://127.0.0.1:8000/items/3), то побачите відповідь:

```JSON
{"item_id":3}
```

/// check | Перевірте

That means that any value read in Python from an environment variable will be a `str`, and any conversion to a different type or any validation has to be done in code.

## Pydantic `Settings` { #pydantic-settings }

### [Marshmallow](https://marshmallow.readthedocs.io/en/stable/) { #marshmallow }

L'une des principales fonctionnalités nécessaires aux systèmes API est la « <dfn title="aussi appelé : marshalling, conversion">sérialisation</dfn> » des données, qui consiste à prendre les données du code (Python) et à
les convertir en quelque chose qui peut être envoyé sur le réseau. Par exemple, convertir un objet contenant des

* <dfn title="also known as: serialization, parsing, marshalling">Conversion</dfn> of input data: coming from the network to Python data and types. Reading from:
    * JSON.
    * Path parameters.
    * Query parameters.
    * Cookies.
    * Headers.
    * Forms.
    * Files.

   * can use {@link com.google.common.collect.Maps#asConverter Maps.asConverter} instead to get a
   * function that also supports reverse conversion.
   *
   * <p>If you are okay with {@code null} being returned for an unrecognized key (instead of an
   * exception being thrown), you can use the method reference {@code map::get} instead. Note that

ENV BAZEL_VS "C:\Program Files\Microsoft Visual Studio\2022\BuildTools"
ENV BAZEL_VC "C:\Program Files\Microsoft Visual Studio\2022\Community\VC"

# Environment variables to prevent auto-conversion of Linux-like paths to Windows paths.
# This is necessary as some paths end up invalid/mangled.
ENV MSYS_NO_PATHCONV 1
ENV MSYS2_ARG_CONV_EXCL *

        return new File(testRoot.get().asFile, '/rest-api-spec/test')
    }

    @OutputDirectory
    DirectoryProperty getTestRoot() {
        return testRoot
    }
/**
     * Is this snippet a candidate for conversion to `// CONSOLE`?
     */
    static isConsoleCandidate(Snippet snippet) {
        /* Snippets that are responses or already marked as `// CONSOLE` or
         * `// NOTCONSOLE` are not candidates. */

        }
    }

    /**
     * Stores a child URL in the crawling queue with duplicate host handling.
     * This method applies duplicate host conversion before storing the URL.
     *
     * @param childUrl the child URL to store
     * @param parentUrl the parent URL that referenced this child URL
     * @param weight the weight/priority of the child URL

   with its <<<DefaultReportConfigurationExpander>>> implementation
   ({{{./xref/org/apache/maven/model/plugin/DefaultReportConfigurationExpander.html}source}})

   ** <(optional)> reports conversion to decoupled site plugin: <<<ReportingConverter>>> ({{{./apidocs/org/apache/maven/model/plugin/ReportingConverter.html}javadoc}}),
   with its <<<DefaultReportingConverter>>> implementation

     * Handles Float and String types, returning 0.0f for unsupported types.
     *
     * @param value the object to convert to float
     * @return float representation of the value, or 0.0f if conversion fails
     */
    protected float toFloat(final Object value) {
        if (value instanceof final Float f) {
            return f;
        }
        if (value instanceof final String s) {