我编写了流程来调度一个 excel 应用程序。我在python中使用了win32库并写了这个：
import win32com.client as win32
import pywinauto
excel = win32.gencache.EnsureDispatch('Excel.Application'
由于这一行，我得到了这个错误：
K:\venv\Scripts\python.exe K:/test_results.efrat.py
Traceback (most recent call last):
File "K:\venv\lib\site-packages\win32com\client\dynamic.py", line 89, in _GetGoodDispatch
IDispatch = pythoncom.connect(IDispatch)
win32.types.com_error: (-2147221005, 'Invalid class string', None, None)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "K:/test_results.efrat.py", line 8, in <module>
excel = win32.gencache.EnsureDispatch('Excel.Application')
File "K:\venv\lib\site-packages\win32com\client\gencache.py", line 527, in EnsureDispatch
disp = win32com.client.Dispatch(prog_id)
File "K:\venv\lib\site-packages\win32com\client\__init__.py", line 95, in Dispatch
dispatch, userName = dynamic._GetGoodDispatchAndUserName(dispatch,userName,clsctx)
File "K:\venv\lib\site-packages\win32com\client\dynamic.py", line 114, in _GetGoodDispatchAndUserName
return (_GetGoodDispatch(IDispatch, clsctx), userName)
File "K:\venv\lib\site-packages\win32com\client\dynamic.py", line 91, in _GetGoodDispatch
IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx, pythoncom.IID_IDispatch)
win32.types.com_error: (-2147221005, 'Invalid class string', None, None)
Process finished with exit code 1
有谁知道可能是什么问题？我的库包中安装了 pywin32 和 pypiwin32。