我想从我的winform C#应用程序中调用Python脚本。我检查了一些解决方案,并遵循了以下方法。一个使用进程间通信,另一个使用IronPython
方法1:使用进程间通信
private void BtnSumPy_Click(object sender, EventArgs e)
{
string python = @"C:\Programs\Python\Python37-32\python.exe";
// python app to call
string myPythonApp = @"C:\mypath\\SamplePy\SamplePy2\SamplePy2.py";
// dummy parameters to send Python script
int x = 3;
int y = 4;
// Create new process start info
ProcessStartInfo myProcessStartInfo = new ProcessStartInfo(python);
// make sure we can read the output from stdout
myProcessStartInfo.UseShellExecute = false;
myProcessStartInfo.RedirectStandardOutput = true;
// start python app with 3 arguments
// 1st arguments is pointer to itself,
// 2nd and 3rd are actual arguments we want to send
myProcessStartInfo.Arguments = myPythonApp + " " + x + " " + y;
Process myProcess = new Process();
// assign start information to the process
myProcess.StartInfo = myProcessStartInfo;
// start the process
myProcess.Start();
// Read the standard output of the app we called.
// in order to avoid deadlock we will read output first
// and then wait for process terminate:
StreamReader myStreamReader = myProcess.StandardOutput;
string myString = myStreamReader.ReadLine();
/*if you need to read multiple lines, you might use:
string myString = myStreamReader.ReadToEnd() */
// wait exit signal from the app we called and then close it.
myProcess.WaitForExit();
myProcess.Close();
lblAns.Text = myString;
}上述方法的问题是,Python.exe也必须安装在本地计算机上,因为winform应用程序将在系统本地运行。
方法2:使用IronPython
private void BtnJsonPy_Click(object sender, EventArgs e)
{
// 1. Create Engine
var engine = Python.CreateEngine();
//2. Provide script and arguments
var script = @"C:\Users\simeh\source\HDFC\repos\SamplePy\SamplePy2\SamplePy2.py"; // provide full path
var source = engine.CreateScriptSourceFromFile(script);
// dummy parameters to send Python script
int x = 3;
int y = 4;
var argv = new List<string>();
argv.Add("");
argv.Add(x.ToString());
argv.Add(y.ToString());
engine.GetSysModule().SetVariable("argv", argv);
//3. redirect output
var eIO = engine.Runtime.IO;
var errors = new MemoryStream();
eIO.SetErrorOutput(errors, Encoding.Default);
var results = new MemoryStream();
eIO.SetOutput(results, Encoding.Default);
//4. Execute script
var scope = engine.CreateScope();
var lib = new[]
{
"C:\\path\\SamplePy\\packages\\IronPython.2.7.9\\lib",
"C:\\path\\SamplePy\\packages\\IronPython.2.7.9",
};
engine.SetSearchPaths(lib);
engine.ExecuteFile(script, scope);
//source.Execute(scope);
//5. Display output
string str(byte[] x1) => Encoding.Default.GetString(x1);
Console.WriteLine("Errrors");
Console.WriteLine(str(errors.ToArray()));
Console.WriteLine();
Console.WriteLine("Results");
Console.WriteLine(str(results.ToArray()));
}我在这里得到的问题是,我一直收到像“Json module error”或“PIL module error”这样的错误。
我在某处读到,PIL目前不能与IronPython一起工作,因为它使用的是本机C库。
python脚本具有ML逻辑,并使用OCR等进行图像处理,因此需要PIL,这在IronPython中是做不到的。
所以如何从Winform C#应用程序调用Python脚本有任何更好方法或方法或建议。
提前感谢!..
发布于 2019-07-03 19:05:15
'import error‘的解决方案在这里,打开cmd,进入AppData>Local>Programs>Python>Python37-32,然后写下
pip3 install json如果你想从c#运行.py文件,导入模块必须在python.exe目录下
例如,ı将cv2和其他库导入到Python37-32目录。在这之后,我的程序运行得很好。
这是我的代码:
timer1.Enabled = true;
progressBar1.Value += 10;
string myPythonApp = "C://Users//giris//Desktop//staj_proje_son//main.py";
string cmdArguments = "/c \"python " + myPythonApp + " " + "--ogrencioptik " + textBox2.Text + " " + "--cevapkagidi " + textBox1.Text + " " + "--sonuckayit " + textBox3.Text + "\"";
ProcessStartInfo start = new ProcessStartInfo();
start.FileName = "cmd.exe";
start.UseShellExecute = false;
start.WorkingDirectory = "C://Users//giris//Desktop//staj_proje_son//";
start.Arguments = cmdArguments;
start.RedirectStandardOutput = false;
start.RedirectStandardError = true;
start.CreateNoWindow = true;
Process process = Process.Start(start);
timer1.Start();
process.WaitForExit();
timer1.Stop();
timer1.Enabled = false;
progressBar1.Value = 100;
MessageBox.Show("İşlem Bitti");
button3.Enabled = true;注意:所有的textbox.text都是文件夹的路径。
https://stackoverflow.com/questions/56868185
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