py-nui-exe アプリが起動するので、exe化したいPythonファイルを選択し、必要なコマンドを選択後、"プロンプト送信"をクリックするとNuitkaが実行されます。

You can use Nuitka to compile Python programs to standalone executables, then redistribute them without the Python runtime.

Have you tried executing C:\Py_Thore\Lib\site-packages\cmake\data\bin\cmake.exe to check why it returns 0xffffffff ?

How to Run Cmd.exe From Python. While it is not common to need to call Windows functions within Python code, you may occasionally need to do so in order to make a program work correctly. If you ...