## Создание и использование переменных окружения

Можно **создавать** и использовать переменные окружения в **оболочке (терминале)**, не прибегая к помощи Python:

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console
// Вы можете создать переменную окружения MY_NAME с помощью
$ export MY_NAME="Wade Wilson"

// Затем её можно использовать в других программах, например
$ echo "Hello $MY_NAME"

	deleteOp := NoOp
	if latestID != globalDeploymentID() {
		return nil
	}
	if lastUpdate.Equal(bStatus.DeletedAt) {
		isMakeBucket = false
		switch {
		case len(withB) == numSites && deletedCnt == numSites:
			deleteOp = NoOp
		case len(withB) == 0 && len(missingB) == numSites:
			deleteOp = Purge
		default:
			deleteOp = MarkDelete
		}
	}
	if isMakeBucket {
		var opts MakeBucketOptions

     * <ul>
     * <li>use either / or \ file path separator</li>
     * <li>have .. parent directory references</li>
     * <li>point either at file or directory, in the latter case POM file name 'pom.xml' needs to be used by the
     * requested model source.</li>
     * </ul>
     *
     * @param relPath is the path of the requested model source relative to this model source POM.

```

By declaring a *path operation function* parameter with the type being the `Request` **FastAPI** will know to pass the `Request` in that parameter.

/// tip

Note that in this case, we are declaring a path parameter beside the request parameter.

So, the path parameter will be extracted, validated, converted to the specified type and annotated with OpenAPI.

* Implement and use well-known cryptographic tools, like Passlib and JWT tokens, etc.
* Add more granular permission controls with OAuth2 scopes where needed.
* ...etc.

Nevertheless, you might have a very specific use case where you really need to disable the API docs for some environment (e.g. for production) or depending on configurations from environment variables.

## Conditional OpenAPI from settings and env vars

  # A local firewall rule for the container is added in
  # ci/official/utilities/setup_docker.sh.
else
  # The volume mapping flag below shares the user's gcloud credentials, if any,
  # with the container, in case the user has credentials stored there.
  # This would allow Bazel to authenticate for RBE.
  # Note: TF's CI does not have any credentials stored there.

  boolean equals(@CheckForNull Object object);

  /**
   * Returns the hash code for this multiset. This is defined as the sum of
   *
   * <pre>{@code
   * ((element == null) ? 0 : element.hashCode()) ^ count(element)
   * }</pre>
   *
   * <p>over all distinct elements in the multiset. It follows that a multiset and its entry set
   * always have the same hash code.
   */
  @Override
  int hashCode();

  /**

 * to the methods of the delegate. For example, overriding {@link #add} alone <b>will not</b> change
 * the behaviour of {@link #offer} which can lead to unexpected behaviour. In this case, you should
 * override {@code offer} as well, either providing your own implementation, or delegating to the
 * provided {@code standardOffer} method.
 *

 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>
 *   <li>{@code NullPointerTester}, at least in the Android backport (where the type-use annotations
 *       {@code NullPointerTester} would need are not available) and in case of <a
 *       href="https://bugs.openjdk.java.net/browse/JDK-8202469">JDK-8202469</a>
 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after we're able to adopt the <a

             * lastNameOffset ends up pointing to either to
             * the exact location of the filename(e.g. Win98)
             * or to the start of the entry containing the
             * filename(e.g. NT). Ahhrg! In either case the
             * lastNameOffset falls between the start of the
             * entry and the next entry.
             */

            if ( this.lastNameBufferIndex >= bufferIndex