wincom32.client.Dispatch在升级到Python 3.8后不起作用

Question

我刚刚升级到Python 3.8.2。升级后，我重新安装了一些经常使用的软件包：

python -m pip install --upgrade pip
pip install -U wxPython
pip install pywin32
pip install python-vlc
pip install PyAutoIt

现在我发现我无法再创建COM对象。一个最小的例子是

import win32com.client
aut = win32com.client.Dispatch("AutoItX3.Control")

此结果导致

Traceback (most recent call last):
  File "C:\Python\lib\site-packages\win32com\client\dynamic.py", line 89, in _GetGoodDispatch
    IDispatch = pythoncom.connect(IDispatch)
pywintypes.com_error: (-2147221021, 'Operation unavailable', None, None)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\testwin32.py", line 2, in <module>
    aut = win32com.client.Dispatch("AutoItX3.Control")
  File "C:\Python\lib\site-packages\win32com\client\__init__.py", line 95, in Dispatch
    dispatch, userName = dynamic._GetGoodDispatchAndUserName(dispatch,userName,clsctx)
  File "C:\Python\lib\site-packages\win32com\client\dynamic.py", line 114, in _GetGoodDispatchAndUserName
    return (_GetGoodDispatch(IDispatch, clsctx), userName)
  File "C:\Python\lib\site-packages\win32com\client\dynamic.py", line 91, in _GetGoodDispatch
    IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx, pythoncom.IID_IDispatch)
pywintypes.com_error: (-2147221164, 'Class not registered', None, None)

这是Python 3.8.2，win32com的问题，还是我需要重新初始化？

Answer 1

发现了问题。当我安装Python 3.8.2时，我获取了32位版本。我使用64位版本重新安装，问题消失了。