import asyncio 报错，找不出问题，麻烦各位大神给看看

Question

================== original code
import asyncio

async def main():
print('Hello ...')
await asyncio.sleep(1)
print('... World!')

/*Python 3.7+*/
asyncio.run(main())

================== wrong message
Traceback (most recent call last):
File "e:\Code\Python\Web\Web\awesome-python3-webapp\www\static\tempCodeRunnerFile.py", line 1, in
import asyncio
File "C:\Python3\Lib\site-packages\asyncio__init__.py", line 21, in
from .base_events import *
File "C:\Python3\Lib\site-packages\asyncio\base_events.py", line 296
future = tasks.async(future, loop=self)
^
SyntaxError: invalid syntax

Answer 1

async在Python3.7已经作为关键字存在了，肯定语法错误啊