ModuleNotFoundError: No module named 'Seal'

[snippsat]

appreciated I have done but this command not execute python setup.py build_ext -i

Can not tell what you doing bye this answer.
Look like you lack some basic knowledge about using command line stuff,
here you most use Git,Cmake, x64 Native Tools Command Prompt for Visual Studio 2019(with your Python version).
I did mention that Docker may de eaiser,but if not heard of used it that's a hurdle to.