如何在 C# 中将 PyObject 转换为字符串

Question

我正在与 Pythonnet 合作创建一个使用后端 Python 代码的 C# GUI。我刚刚学习连接的工作原理，需要将 Python 变量输入 C# 并将其显示在 C# 文本框中。如何获取 Python 中“outer”的计算值并将其显示在 textBox1 中？将输出发送到控制台时它工作正常，但我需要它在文本框中。

public Form1()
        {
            InitializeComponent();
            Runtime.PythonDLL = @"C:\Program Files (x86)\Python312-32\python312.dll";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //THIS WORKS NOW!!
            PyModule scope;


            PythonEngine.Initialize();
            using (Py.GIL())
            {

                scope = Py.CreateScope();
                //scope.Exec("print('Hello World from Python!')");

                dynamic np = Py.Import("numpy");
                dynamic outer=(np.cos(np.pi * 2));

                //This is the part that does not work.  
                //It says can't convert a PyObject to a string.
                textBox1.Text = outer  





                //Console.WriteLine("Press enter to close...");
                //Console.ReadLine();
            }

Answer 1

尝试如下所示：

 using Python.Runtime;
    
    class Program
    {
        static void Main()
        {
            using (Py.GIL())
            {
                
                dynamic np = Py.Import("numpy");
                dynamic someValue = (np.cos(np.pi * 2))
                var stringValue = new PyString(someValue)
                Console.WriteLine(stringValue );
            }
        }
    
    }