Python for .Net：运行嵌入式解释器

Question

我将使用在https://github.com/renshawbay/pythonnet找到的Python.Net版本来使用Python3.2。下面是一个简单的测试程序：

using System;
using System.IO;
using Python.Runtime;

namespace TestPythonNet
{
    class Program
    {
        static void Main(string[] args)
        {
            string binDir = Path.GetDirectoryName(System.Reflection.Assembly.GetAssembly(typeof(Program)).Location);
            string pyHome = @"D:\src\scratch\TestPythonNet\TestPythonNet\PythonRuntime";
            PythonEngine.PythonHome = @"D:\src\scratch\TestPythonNet\TestPythonNet\PythonRuntime";
            PythonEngine.ProgramName = "PythonRuntime";
            Environment.SetEnvironmentVariable("PYTHONPATH",
                Path.GetFullPath(Path.Combine(pyHome, "DLLs")) + ";" +
                Path.GetFullPath(Path.Combine(pyHome, "Lib")) + ";" +
                Path.GetFullPath(Path.Combine(pyHome, "Lib", "site-packages")) + ";" +
                binDir
                );
            Environment.SetEnvironmentVariable("PYTHONVERBOSE", "1");
            PythonEngine.Initialize();
            PythonEngine.ImportModule("clr");
            using (Py.GIL())
            {
                PythonEngine.RunSimpleString(
                    "import clr; " +
                   "a = clr.AddReference('System'); " +
                    "print(a.Location);" +
                    "from System import Environment;" +
                    "print(Environment.MachineName);");
            }
        }
    }
}

"

“D:\src\scratch\TestPythonNet\TestPythonNet\PythonRuntime” 是一个文件夹，我从 Python 3.2 x86 发行版中复制了 DLL 和 Lib 文件夹。

在 Visual Studio 中运行该程序时，它可以正常工作（我猜这可能与我正在使用 Visual Studio 的 Python 工具有关）。

但是，当我从控制台运行它时，它会失败并输出以下内容：

"

Traceback (most recent call last):
  File "D:\src\scratch\TestPythonNet\TestPythonNet\PythonRuntime\Lib\site.py", line 481, in execsitecustomize
    import sitecustomize
UnicodeEncodeError: 'mbcs' codec can't encode characters in position 0--1: invalid character
Traceback (most recent call last):
  File "D:\src\scratch\TestPythonNet\TestPythonNet\PythonRuntime\Lib\site.py", line 497, in execusercustomize
    import usercustomize
UnicodeEncodeError: 'mbcs' codec can't encode characters in position 0--1: invalid character
C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll
Traceback (most recent call last):
  File "<string>", line 1, in <module>
UnicodeEncodeError: 'mbcs' codec can't encode characters in position 0--1: invalid character

“print(a.Location);"可以工作，但“from System import Environment”无法工作。同时还有一些关于mbcs的错误。

您对我做错了什么有任何想法吗？

- Serge Weinstock

Answer 1

VS在路径中有Python文件夹，而在VS之外没有环境变量可以帮助。关键是您必须将Python添加到PATH中。 要深入了解，请参见此处：https://github.com/pythonnet/pythonnet/issues/1301

- johnnyontheweb