C#调用Python，并实时获取Python程序的print内容

在print后调用一下sys.stdout.flush()即可实时读到命令行的内容

print(os.path.join(self.imagefile, filename + ".jpg"))

sys.stdout.flush() # 清空缓冲区，实时输出

/// 

/// 执行命令行工具
/// 
public static bool Execute(string processPath, string arguments, string workingDirectory, Action outputCallBack = null, Encoding encoding = null, bool showWindow = false, double? timeout = null)
{
	try
    {
		var processStartInfo = new ProcessStartInfo()
        {
        	FileName = processPath,
            Arguments = arguments,
            UseShellExecute = false,
            RedirectStandardOutput = true,
            RedirectStandardError = true,
            WorkingDirectory = workingDirectory,
            StandardOutputEncoding = encoding == null ? Encoding.UTF8 : encoding,
#if DEBUG
            WindowStyle = ProcessWindowStyle.Minimized,
            CreateNoWindow = false
#else
            WindowStyle = ProcessWindowStyle.Hidden,
            CreateNoWindow = true
#endif
		};
		
		if (showWindow)
        {
			processStartInfo.WindowStyle = ProcessWindowStyle.Minimized;
            processStartInfo.CreateNoWindow = false;
        }

		using (var progress = Process.Start(processStartInfo))
        {
        	if (null == progress)
            	return false;
			
			if (timeout != null)
			{
				var dateTime = DateTime.Now;
	            DateTime finshTime = dateTime.AddSeconds((double)timeout);
                Task.Factory.StartNew(() =>
                {
                	while (true)
                    {
                    	if (finshTime < DateTime.Now || progress == null)
                        {
							progress.Kill();
                            progress?.Close();
                            break;
						}
                        Thread.Sleep(1000);
					}
				});
			}
			
			progress.OutputDataReceived += (sender, arg) =>
			{
            	try
                {
					if (!string.IsNullOrEmpty(arg.Data) && null != outputCallBack)
                    	outputCallBack(arg.Data);
				}
                catch (Exception ex)
                {

                }
			};
            progress.ErrorDataReceived += (sender, arg) =>
            {
             	try
                {
                	if (!string.IsNullOrEmpty(arg.Data) && null != outputCallBack)
                    	outputCallBack(arg.Data);
				}
                catch (Exception ex)
                {

                }
            };
            progress.BeginErrorReadLine();
            progress.BeginOutputReadLine();
            progress.WaitForExit();
            progress.Close();
		}
        return true;
	}
    catch (Exception ex)
    {
	    return false;
    }
}