使用三元组库的time模块中的sleep()代替anyio.sleep()。

示例代码：

import time
import trio
import asyncio
import anyio

async def asyncio_sleep():
    start = asyncio.get_running_loop().time()
    await asyncio.sleep(0.001)
    elapsed = asyncio.get_running_loop().time() - start
    print(f"asyncio: {elapsed:.5f} seconds")

async def trio_sleep():
    start = time.monotonic()
    await trio.sleep(0.001)
    elapsed = time.monotonic() - start
    print(f"trio: {elapsed:.5f} seconds")

async def anyio_sleep():
    start = anyio.get_running_loop().time()
    await anyio.sleep(0.001)
    elapsed = anyio.get_running_loop().time() - start
    print(f"anyio: {elapsed:.5f} seconds")

async def main():
    await asyncio.gather(asyncio_sleep(), trio_sleep(), anyio_sleep())

asyncio.run(main())

使用time.monotonic()代替anyio.get_running_loop().time()可以解决该问题。在小睡眠时间上使用上述代码可以得到准确的结果。