你也可以用一般的 `def` 函式（沒有 `async`），同樣用 `yield`。

FastAPI 會確保正確執行，不會阻塞事件迴圈。

因為這種情況下函式不是 async，正確的回傳型別會是 `Iterable[Item]`：

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[27:30] hl[28] *}

### 不宣告回傳型別 { #no-return-type }

你也可以省略回傳型別。此時 FastAPI 會使用 [`jsonable_encoder`](./encoder.md) 將資料轉換為可序列化為 JSON 的形式，然後以 JSON Lines 傳送。

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[33:36] hl[34] *}

    assertTrue(primary.isCancelled());
    assertFalse(primary.wasInterrupted());
  }

  // catching() uses a plain Function, so there's no testCatching_resultCancelledAfterFallback().

  // catching() uses a plain Function, so there's no testCatching_nullInsteadOfFuture().

  // Some tests of the exceptionType parameter:

  public void testCatching_throwable() throws Exception {

    assertTrue(primary.isCancelled());
    assertFalse(primary.wasInterrupted());
  }

  // catching() uses a plain Function, so there's no testCatching_resultCancelledAfterFallback().

  // catching() uses a plain Function, so there's no testCatching_nullInsteadOfFuture().

  // Some tests of the exceptionType parameter:

  public void testCatching_throwable() throws Exception {

これらのオプション依存関係が不要な場合は、代わりに `pip install fastapi` をインストールできます。

標準依存関係はインストールしたいが `fastapi-cloud-cli` は不要な場合は、`pip install "fastapi[standard-no-fastapi-cloud-cli]"` でインストールできます。

///

/// tip | 豆知識

        assertEquals(1, cmdList.size());
        assertEquals("-Dnon.existent.property=default.value", cmdList.get(0));

        // Test with property that doesn't exist and no default value
        cmdList.clear();
        execJob.testAddSystemProperty(cmdList, "another.non.existent", null, null);
        assertEquals(0, cmdList.size());

        // Clean up

        // Header
        bb.putShort((short) 3); // version
        bb.putShort((short) 100); // size (large enough for all strings)
        bb.putShort((short) 1); // serverType
        bb.putShort((short) 0); // rflags (no name list)
        bb.putShort((short) 5); // proximity
        bb.putShort((short) 300); // ttl
        bb.putShort((short) 22); // pathOffset (relative to start of referral)
        bb.putShort((short) 54); // altPathOffset

	for _, com := range g.List {
		c := com.Text
		// Remove comment markers.
		// The parser has given us exactly the comment text.
		switch c[1] {
		case '/':
			//-style comment (no newline at the end)
			c = c[2:] + "\n"
		case '*':
			/*-style comment */
			c = c[2 : len(c)-2]
		}
		pieces = append(pieces, c)
	}
	return strings.Join(pieces, "")
}

	}

	if err := DB.Session(&gorm.Session{AllowGlobalUpdate: true}).Model(&User{}).Update("name", "jinzhu").Error; err != nil {
		t.Errorf("should returns no error while enable global update, but got err %v", err)
	}
}

func TestSelectWithUpdate(t *testing.T) {

### Debugging TLS Handshake Failures

The TLS handshake requires clients and servers to share a common TLS version and cipher suite. This
depends on the JVM or Android version, OkHttp version, and web server configuration. If there is no
common cipher suite and TLS version, your call will fail like this:

```
Caused by: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x7f2719a89e80:
    Failure in SSL library, usually a protocol error

            assertNotNull(ticket);
        }
    }

    @Test
    void testConstructorWithKeyNotFound() throws IOException {
        // Test when no suitable Kerberos key is found
        byte[] token = createTestTicketBytes(new BigInteger(KerberosConstants.KERBEROS_VERSION), SERVER_REALM, SERVER_PRINCIPAL_NAME,
                ENCRYPTION_TYPE, ENCRYPTED_DATA, null);