int len = next.writeParametersWireFormat(dst, 0);

        // Then
        assertEquals(expectedLen, len, "Unexpected parameters length");

        // sid (2 bytes, LE)
        assertEquals((byte) 0x34, dst[0]);
        assertEquals((byte) 0x12, dst[1]);

        // LIST_COUNT (2 bytes, LE)
        int listCount = Trans2FindFirst2.LIST_COUNT;
        assertEquals((byte) (listCount & 0xFF), dst[2]);

        dnsDomainInfo.domain_guid.time_hi_and_version = 0x5678;
        dnsDomainInfo.domain_guid.clock_seq_hi_and_reserved = 0x12;
        dnsDomainInfo.domain_guid.clock_seq_low = 0x34;
        dnsDomainInfo.domain_guid.node = new byte[] { 1, 2, 3, 4, 5, 6 };

        dnsDomainInfo.sid = new rpc.sid_t();
        dnsDomainInfo.sid.revision = 1;

    // alternative subject starting with a japanese kanji character. This is
    // not supported by Android because the underlying implementation from
    // harmony follows the definition from rfc 1034 page 10 for alternative
    // subject names. This causes the code to drop all alternative subjects.
    assertThat(verifier.verify("bar.com", session)).isTrue()
    assertThat(verifier.verify("a.bar.com", session)).isFalse()

        true
    }

    private static boolean assertDefaultFilePermissions(int mode) {
        assert ((mode >> 6) & 07) == 6
        assert ((mode >> 3) & 07) == 4
        assert ((mode >> 0) & 07) == 4
        true
    }

    private static boolean assertEmptyDirTasksTriggered(BuildResult result) {
        result.task(":createJvmOptionsDir").outcome == TaskOutcome.SUCCESS

{* ../../docs_src/stream_data/tutorial002_py310.py ln[30:34] hl[31] *}

/// tip

{* ../../docs_src/stream_data/tutorial002_py310.py ln[30:34] hl[31] *}

/// tip | Порада

{* ../../docs_src/stream_data/tutorial002_py310.py ln[30:34] hl[31] *}

/// tip | Astuce

    "inline-snapshot >=0.21.1",
    "mypy >=1.14.1",
    "pwdlib[argon2] >=0.2.1",
    "pyjwt >=2.9.0",
    "pytest >=9.0.0",
    "pytest-codspeed >=4.2.0",
    "pyyaml >=5.3.1,<7.0.0",
    "sqlmodel >=0.0.31",
    "strawberry-graphql >=0.200.0,<1.0.0",
    "ty>=0.0.9",
    "types-orjson >=3.6.2",
    "types-ujson >=5.10.0.20240515",
    "a2wsgi >=1.9.0,<=2.0.0",
    "pytest-xdist[psutil]>=2.5.0",

但在许多情况下，读取文件或类文件对象会发生阻塞。

///

为避免阻塞事件循环，你可以简单地把*路径操作函数*声明为常规的 `def`（而不是 `async def`），这样 FastAPI 会在一个线程池工作线程上运行它，从而避免阻塞主事件循环。

{* ../../docs_src/stream_data/tutorial002_py310.py ln[30:34] hl[31] *}

/// tip | 提示

如果你需要在异步函数里调用阻塞代码，或在阻塞函数里调用异步函数，可以使用 [Asyncer](https://asyncer.tiangolo.com)，它是 FastAPI 的姐妹库。

///

### `yield from` { #yield-from }

    for (int i = 0; i < 8; i++) {
      limiter.acquire(); // #7
    }
    assertEvents(
        "R0.00, R1.38, R1.13, R0.88, R0.63, R0.50, R0.50, R0.50", // #1
        "U0.50", // #2
        "U4.00", // #3
        "R0.00, R1.38, R1.13, R0.88, R0.63, R0.50, R0.50, R0.50", // #4
        "U0.50", // #5
        "U2.00", // #6
        "R0.00, R0.50, R0.50, R0.50, R0.50, R0.50, R0.50, R0.50"); // #7
  }