python27_get_path

private string GetPythonPath()
{
    Func<Microsoft.Win32.RegistryKey, string> get_path = key =>
    {
        using (var sub_key = key.OpenSubKey(@"SOFTWARE\Python\PythonCore\2.7\InstallPath"))
        {
            if (sub_key == null)
                return null;
            var path = (string)sub_key.GetValue(null);

            return path;
        }
    };

    if (System.Environment.Is64BitOperatingSystem)
    {
        using (var hklm = Microsoft.Win32.RegistryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, Microsoft.Win32.RegistryView.Registry64))
        {
            var path64 = get_path(hklm);
            if (path64 != null) return path64;
        }
    }

    var path32 = get_path(Microsoft.Win32.Registry.CurrentUser);
    if (path32 != null) return path32;

    throw new NotSupportedException("Python2.7がinstallされていません。");
}