为什么运行异步协同程序不返回控制?

我有一个示例代码:

import asyncio

import time

async def asyncsleep(number):
    time.sleep(number)

async def do_one():
    await asyncsleep(1)
    print("one 1")
    await asyncsleep(1)
    print("one 2")
    await asyncsleep(1)
    print("one 3")

async def do_two():
    await asyncsleep(1)
    print("two 1")
    await asyncsleep(1)
    print("two 2")
    await asyncsleep(1)
    print("two 3")

loop = asyncio.get_event_loop()
loop.run_until_complete(asyncio.wait([
    do_one(),
    do_two()
]))
loop.close()

此代码期望两个函数并行运行。我的意思是两者的输出应该同时进行。但事实并非如此。原因是我自己实现了一个睡眠功能 asyncsleep . 如果我使用 asyncio.sleep 不是这样,一切都很好。

import asyncio

import time

async def asyncsleep(number):
    time.sleep(number)

async def do_one():
    await asyncio.sleep(1)
    print("one 1")
    await asyncio.sleep(1)
    print("one 2")
    await asyncio.sleep(1)
    print("one 3")

async def do_two():
    await asyncio.sleep(1)
    print("two 1")
    await asyncio.sleep(1)
    print("two 2")
    await asyncio.sleep(1)
    print("two 3")

loop = asyncio.get_event_loop()
loop.run_until_complete(asyncio.wait([
    do_one(),
    do_two()
]))
loop.close()

我也查过 异步睡眠 功能:

@coroutine
def sleep(delay, result=None, *, loop=None):
    """Coroutine that completes after a given time (in seconds)."""
    if delay == 0:
        yield
        return result

    if loop is None:
        loop = events.get_event_loop()
    future = loop.create_future()
    h = future._loop.call_later(delay,
                                futures._set_result_unless_cancelled,
                                future, result)
    try:
        return (yield from future)
    finally:
        h.cancel()

什么 异步睡眠 函数已实现 异步睡眠 函数没有?他们都是共济会成员,为什么他们的行为不同?