Python asyncio '_overlapped' is not imported

问题

Could not import asyncio library in virtualenv.

• Python 3.6.4 x32
• Win 10 x64

Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:04:45) [MSC v.1900 32 bit (Intel)] on win32
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>>>import asyncio
Traceback (most recent call last):
  File "C:\Python36\Lib\asyncio\__init__.py", line 16, in <module>
    from . import _overlapped
ImportError: cannot import name '_overlapped'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python36\Lib\asyncio\__init__.py", line 18, in <module>
    import _overlapped  # Will also be exported.
OSError: [WinError 0] The operation completed successfully

There is no module _overlapped in asyncio folder "C:\Python36\Lib\asyncio\". Also I know that asyncio is a part of Python from version 3.4.

What is wrong and what should i do? Could it be due to x64 Win and not x64 Python?

来源：https://stackoverflow.com/questions/48077745/python-asyncio-overlapped-is-not-imported