原因是python3.8只在指定的位置搜索dll，解決方法是在python代碼中將要搜索的dll目錄加入搜索路徑。

Starting with Python 3.8, the .dll search mechanism has changed.

According to [Python 3.Docs]: os.add_dll_directory(path) (emphasis is mine):

Add a path to the DLL search path.

This search path is used when resolving dependencies for imported extension modules (the module itself is resolved through sys.path), and also by ctypes.

So, you could do:

os.add_dll_directory("path_to_working_dlls_directoy")

You can check [SO]: PyWin32 and Python 3.8.0 (@CristiFati's answer) (which has the same cause), for more details.

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