title: Compile, run, and import Python module in C# .Net
body: <p>I've been trying to run python in C# .Net environment. It succeed to compile and run python script without importing any libraries. But, I need to import numpy in that python script ran in C# .Net in order to Execute it properly.
  This is my source code, without importing libraries and succeed:</p>
  
  <pre><code>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();
  </code></pre>
  
  <p>but, when I tried to import numpy :</p>
  
  <pre><code>    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();
  </code></pre>
  
  <p>It gave me error : </p>
  
  <blockquote>
    <p>No module named numpy</p>
  </blockquote>
  
  <p>How to solve this, thank you.</p>