names = append(names, f.Name)
		if _, err := f.Open(); err != nil {
			t.Errorf("Error opening %q: %v", f.Name, err)
		}
		if _, err := r.Open(f.Name); err == nil {
			t.Errorf("Opening %q with fs.FS API succeeded", f.Name)
		}
	}
	if !slices.Equal(names, entryNames) {
		t.Errorf("Unexpected file entries: %q", names)
	}
	if _, err := r.Open(""); err == nil {

<div class="termy">

```console
$ fastapi dev main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Open your browser at <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

You will see a simple page like:

<img src="/img/tutorial/websockets/image01.png">

	var stsOpts cr.STSAssumeRoleOptions
	stsOpts.AccessKey = minioUsername
	stsOpts.SecretKey = minioPassword

	if sessionPolicyFile != "" {
		var policy string
		if f, err := os.Open(sessionPolicyFile); err != nil {
			log.Fatalf("Unable to open session policy file: %v", err)
		} else {
			defer f.Close()
			bs, err := io.ReadAll(f)
			if err != nil {
				log.Fatalf("Error reading session policy file: %v", err)
			}

			cli.ShowAppHelpAndExit(c, 1) // last argument is exit code
		}

		ht := make(map[string]map[string]any)
		file := c.Args().Get(0)
		if strings.HasSuffix(file, ".zip") {
			var sz int64
			f, err := os.Open(file)
			if err != nil {
				return err
			}
			if st, err := f.Stat(); err == nil {
				sz = st.Size()
			}
			defer f.Close()
			zr, err := zip.NewReader(f, sz)
			if err != nil {
				return err
			}

        this.treeHandle = th.acquire();
        try {
            this.next = open();
        } catch (final Exception e) {
            this.treeHandle.release();
            throw e;
        }

    }

    private FileEntry open() throws CIFSException {
        this.treeHandle.send(this.request, this.response);
        checkStatus();
        final FileEntry n = advance();

        }

        return f;
    }

    void open(final int flags, final int access, final int attrs, final int options) throws SmbException {
        if (isOpen()) {
            return;
        }
        fid = open0(flags, access, attrs, options);
        opened = true;
        tree_num = tree.tree_num;
    }

    boolean isOpen() {
        return opened && isConnected() && tree_num == tree.tree_num;

        }
        return b;
    }

    /**
     * Creates a range of dialect versions between min and max.
     *
     * @param min
     *            may be null for open end
     * @param max
     *            may be null for open end
     * @return range of versions
     */
    public static Set<DialectVersion> range(final DialectVersion min, final DialectVersion max) {

	// LDAP STS API.

	// Initialize LDAP credentials
	var ldapOpts []cr.LDAPIdentityOpt
	if sessionPolicyFile != "" {
		var policy string
		if f, err := os.Open(sessionPolicyFile); err != nil {
			log.Fatalf("Unable to open session policy file %s: %v", sessionPolicyFile, err)
		} else {
			bs, err := io.ReadAll(f)
			if err != nil {
				log.Fatalf("Error reading session policy file: %v", err)
			}

          """
          |data: hey
          |
          |
          """.trimMargin(),
        ).setHeader("content-type", "text/event-stream")
        .build(),
    )
    listener.enqueueCancel() // Will cancel in onOpen().
    newEventSource()
    listener.assertOpen()
    listener.assertFailure("canceled")
  }

  @Test
  fun badContentType() {
    server.enqueue(
      MockResponse
        .Builder()

                                   '0Z4VTG8uJBSekn42HE40DK9vQb4a'),
)

boto3_session = Session(botocore_session=bc_session)
s3 = boto3_session.resource('s3', endpoint_url='http://localhost:9000')

with open('/etc/hosts', 'rb') as data:
    s3.meta.client.upload_fileobj(data,
                                  'testbucket',
                                  'hosts',