c# - .Net : Running an embedded interpreter 的 Python

Question

我正在尝试使用 Python3.2 使用 Python.Net 版本:https://github.com/renshawbay/pythonnet

我正在使用以下简单的测试程序:

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”是我从 python 3.2 x86 发行版复制 DLLs 和 Lib 文件夹的文件夹。

当我从 Visual Studio 运行它时，它工作正常(我想这可能与我使用 Visual Studio 的 Python 工具这一事实有关)。

但是当我从控制台运行它时，它失败并输出:

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);”有效，但“from System import Environment”无效。关于mbcs也有所有这些错误。

知道我做错了什么吗？

Answer 1

VS 在路径中有 Python 文件夹，在 Vs 之外没有可以提供帮助的环境变量。关键是你必须在 PATH 中有 Python。
要深入了解，请参阅:https://github.com/pythonnet/pythonnet/issues/1301