C#基于pythonnet调用Python的pyd文件，实现Python多个类调用并传参

1.Python实现
1.1、Add.py类实现加法计算

def add(x,y):
    return x+y

1.2、Test.py类实现调用Add.py加法计算

import Add
def ShowNum(x,y):
    print('和为：%d' % Add.add(x,y))
    return Add.add(x,y)

if __name__ == "__main__":
    ShowNum(2,3)

1.3、setup.py类实现pyd生成

from distutils.core import setup
from Cython.Build import cythonize
setup(ext_modules = cythonize("Test.py"))
setup(ext_modules = cythonize("Add.py"))

2.生成pyd文件
在终端输入 python setup.py build_ext --inplace，然后按回车，如图所示

3.C#调用python的pyd文件
3.1、先在nuget下载对应的pythonnet版本（根据python版本选择）

3.2、C#代码实现

 private void TestPython()
 {
     try
     {
         //python环境路径
         string pathToVirtualEnv = @"H:\ProgramData\anaconda3\envs\python39";
         Environment.SetEnvironmentVariable("PATH", pathToVirtualEnv, EnvironmentVariableTarget.Process);
         Environment.SetEnvironmentVariable("PYTHONHOME", pathToVirtualEnv, EnvironmentVariableTarget.Process);
         Environment.SetEnvironmentVariable("PYTHONPATH", pathToVirtualEnv + "\\Lib\\site-packages;" + pathToVirtualEnv + "\\Lib", EnvironmentVariableTarget.Process);

         PythonEngine.PythonHome = pathToVirtualEnv;
         PythonEngine.PythonPath = PythonEngine.PythonPath + ";" + Environment.GetEnvironmentVariable("PYTHONPATH", EnvironmentVariableTarget.Process);
         PythonEngine.Initialize();
         PythonEngine.BeginAllowThreads();
         using (Py.GIL()) // 使用这个来包裹你调用python方法的代码
         {
             // 先引入python模块，也就是我们上面生成的pyd文件，如Test.cp39-win_amd64.pyd
             dynamic my_module = Py.Import("Test");
             // Call your python functions.
             int value = my_module.ShowNum(5,21);
             Debug.Write("[Debug]:" + value +"\t\n");
         }
     }
     catch (Exception ex)
     {
         Debug.WriteLine("[ERROR]:" + ex.Message + "\t\n");
     }
 }