asyncio.await失败，返回TypeError:无法解包不可迭代的协程对象

import asyncio

async def my_coroutine():
    # 执行一些异步操作
    await asyncio.sleep(1)
    return 'Hello, World!'

async def main():
    result = await my_coroutine()
    print(result)

asyncio.run(main())

import asyncio

async def my_coroutine():
    # 执行一些异步操作
    await asyncio.sleep(1)
    return 'Hello, World!'

async def main():
    task = asyncio.create_task(my_coroutine())
    result = await task
    print(result)

asyncio.run(main())

import asyncio

async def coroutine1():
    # 执行一些异步操作
    await asyncio.sleep(1)
    return 'Hello'

async def coroutine2():
    # 执行一些异步操作
    await asyncio.sleep(2)
    return 'World'

async def main():
    results = await asyncio.gather(coroutine1(), coroutine2())
    print(results)

asyncio.run(main())