///

/// tip

Notice that in this case we are using a standard Python `open()` function that interacts with a file.

So, it involves I/O (input/output), that requires "waiting" for things to be written to disk.

But `open()` doesn't use `async` and `await`.

So, we declare the event handler function with standard `def` instead of `async def`.

///

For example, it was clear that ideally it should be based on standard Python type hints.

Also, the best approach was to use already existing standards.

So, before even starting to code **FastAPI**, I spent several months studying the specs for OpenAPI, JSON Schema, OAuth2, etc. Understanding their relationship, overlap, and differences.

{* ../../docs_src/sub_applications/tutorial001_py39.py hl[3, 6:8] *}

### Unteranwendung { #sub-application }

Erstellen Sie dann Ihre Unteranwendung und deren *Pfadoperationen*.

Diese Unteranwendung ist nur eine weitere Standard-FastAPI-Anwendung, aber diese wird „gemountet“:

{* ../../docs_src/sub_applications/tutorial001_py39.py hl[11, 14:16] *}

### Die Unteranwendung mounten { #mount-the-sub-application }

the MinIO server's config sub-directory that is used to store certificates. By default, the location is
`/<user-running-minio>/.minio/certs`.

*Tip*: In a standard Kubernetes configuration, this will be `/root/.minio/certs`. Kubernetes will mount the secrets volume read-only,

It can be configured via MinIO's standard configuration API (i.e. using `mc admin config set/get`), or equivalently with environment variables. For brevity we show only environment variables here:

```sh
$ mc admin config set myminio identity_plugin --env
KEY:

<div class="termy">

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

---> 100%
```

</div>

////

//// tab | `uv`

Если у вас установлен <a href="https://github.com/astral-sh/uv" class="external-link" target="_blank">`uv`</a>:

<div class="termy">

```console
$ uv pip install "fastapi[standard]"
---> 100%
```

</div>

////

    /**
     * The checksum algorithm.
     */
    interface ChecksumAlgorithm {
        /**
         * Returns the algorithm name, usually used as key, never {@code null} value. The name is a standard name of
         * algorithm (if applicable) or any other designator that is algorithm commonly referred with. Example: "SHA-1".
         */
        @Nonnull
        String getName();

        /**

## Check the username { #check-the-username }

Here's a more complete example.

Use a dependency to check if the username and password are correct.

For this, use the Python standard module <a href="https://docs.python.org/3/library/secrets.html" class="external-link" target="_blank">`secrets`</a> to check the username and password.

# OAuth2 scopes { #oauth2-scopes }

You can use OAuth2 scopes directly with **FastAPI**, they are integrated to work seamlessly.

This would allow you to have a more fine-grained permission system, following the OAuth2 standard, integrated into your OpenAPI application (and the API docs).

}{
	{
		Header: http.Header{
			xhttp.AmzServerSideEncryptionCustomerKey:     []string{""},
			xhttp.AmzServerSideEncryptionCopyCustomerKey: []string{""},
		},
		ExpectedHeader: http.Header{},
	},
	{ // Standard SSE-C request headers
		Header: http.Header{
			xhttp.AmzServerSideEncryptionCustomerAlgorithm: []string{xhttp.AmzEncryptionAES},