Question

我一直试图在C＃.Net环境中运行python。它成功编译并运行python脚本而无需导入任何库。但是，我需要在C＃.Net中运行的python脚本中导入numpy才能正确执行它。这是我的源代码，没有导入库并且成功：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Diagnostics;
using IronPython.Hosting;
using Microsoft.CSharp.RuntimeBinder;

    namespace TestProject
    {
        class Program
        {
            static void Main(string[] args)
            {
                 Console.WriteLine("Enter the text you would like the script to print!");
                 var script =
                     "class MyClass:\r\n" +
                     "    def __init__(self):\r\n" +
                     "        pass\r\n" +
                     "    def go(self, input):\r\n" +
                     "        print('From dynamic python: ' + input)\r\n" +
                     "        return input";

                try
                {

                    var engine = Python.CreateEngine();
                    var scope = engine.CreateScope();
                    var ops = engine.Operations;

                    engine.Execute(script, scope);
                    var pythonType = scope.GetVariable("MyClass");
                    dynamic instance = ops.CreateInstance(pythonType);
                    var value = instance.go(input);
                    Console.WriteLine(value);

                }
                catch (Exception ex)
                {
                    Console.WriteLine("Oops! There was an exception" +
                      " while running the script: " + ex.Message);
                }

                Console.WriteLine("Press enter to exit...");
                Console.ReadLine();

但是，当我尝试导入numpy时：

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Diagnostics;
    using IronPython.Hosting;
    using Microsoft.CSharp.RuntimeBinder;

        namespace TestProject
        {
            class Program
            {
                static void Main(string[] args)
                {
                     Console.WriteLine("Enter the text you would like the script to print!");
                     var script =
                         "import numpy" //I added this module
                         "class MyClass:\r\n" +
                         "    def __init__(self):\r\n" +
                         "        pass\r\n" +
                         "    def go(self, input):\r\n" +
                         "        print('From dynamic python: ' + input)\r\n" +
                         "        return input";

                    try
                    {

                        var engine = Python.CreateEngine();
                        var scope = engine.CreateScope();
                        var ops = engine.Operations;

                        engine.Execute(script, scope);
                        var pythonType = scope.GetVariable("MyClass");
                        dynamic instance = ops.CreateInstance(pythonType);
                        var value = instance.go(input);
                        Console.WriteLine(value);

                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine("Oops! There was an exception" +
                          " while running the script: " + ex.Message);
                    }

                    Console.WriteLine("Press enter to exit...");
                    Console.ReadLine();

它给了我错误：

没有名为numpy的模块

如何解决这个问题，谢谢。

Answer 1

IronPython是.Net运行时之上的Python实现。它只能导入和使用用纯Python编写的模块，或者是用IronPython本身分发的standardlib的一部分。据我所知，numpy不是其中之一，它是基于C的扩展。

我希望你安装了一些其他基于C语言的Python实现（常规的CPython，Anaconda或其他），然后添加了numpy，你试图从IronPython中调用它。这是不可能的。

您可以做的最好的事情是将Python脚本保存在.py文件中，然后将其作为参数传递给python.exe并检索结果。您可以使用常规.Net来实现这一点，寻找从C＃运行任何exe的方法。

在C＃.Net中编译，运行和导入Python模块

1 个答案: