https://github.com/pythonnet/pythonnet/issues/1348

https://github.com/pythonnet/pythonnet/issues/1273

只需要设置环境变量就可以了

var pythonDllFilePath = "C:\Users\spike\AppData\Local\Programs\Python\Python39\python39.dll";
var pythonTask = Task.Run(() =>
{

		Environment.SetEnvironmentVariable("PYTHONNET_PYDLL", pythonDllFilePath);

		using (Py.GIL())
		{
				// create a Python scope
				using (var scope = Py.CreateScope())
				{
						scope.Exec(Script.Expression);
				}
		}
});
TimeSpan ts = TimeSpan.FromMinutes(5);
if (!pythonTask.Wait(ts))
		code = "The task timeout .";