Hello.
How can I run some Python script within C# program?
Thanks,
Zlatko
How can I run some Python script within C# program?
Thanks,
Zlatko
-
-
Re: starting some Python script from C#
tatamata wrote:[color=blue]
> Hello.
>
> How can I run some Python script within C# program?
>[/color]
---------------------------------------------------------------------------------
ProcessStartInf o startInfo;
Process process;
string directory;
string pyArgs;
string script;
startInfo = new ProcessStartInf o("python");
startInfo.Worki ngDirectory = directory;
startInfo.Argum ents = script + " " + pyArgs;
startInfo.UseSh ellExecute = false;
startInfo.Creat eNoWindow = true;
startInfo.Redir ectStandardOutp ut = true;
startInfo.Redir ectStandardErro r = true;
process = new Process();
process.StartIn fo = startInfo;
process.Start() ;
string s;
while ((s = process.Standar dOutput.ReadLin e()) != null)
{
//do something with s
}
---------------------------------------------------------------------------------
HTH
Gerard
-
Re: starting some Python script from C#
thanks.
"Gerard Flanagan" <grflanagan@yah oo.co.uk> je napisao u poruci interesnoj
grupi:114872894 0.440692.166330 @i39g2000cwa.go oglegroups.com. ..[color=blue]
> tatamata wrote:[color=green]
>> Hello.
>>
>> How can I run some Python script within C# program?
>>[/color]
>
> ---------------------------------------------------------------------------------
> ProcessStartInf o startInfo;
> Process process;
> string directory;
> string pyArgs;
> string script;
>
> startInfo = new ProcessStartInf o("python");
> startInfo.Worki ngDirectory = directory;
> startInfo.Argum ents = script + " " + pyArgs;
> startInfo.UseSh ellExecute = false;
> startInfo.Creat eNoWindow = true;
> startInfo.Redir ectStandardOutp ut = true;
> startInfo.Redir ectStandardErro r = true;
>
> process = new Process();
> process.StartIn fo = startInfo;
> process.Start() ;
>
> string s;
> while ((s = process.Standar dOutput.ReadLin e()) != null)
> {
> //do something with s
> }
> ---------------------------------------------------------------------------------
>
> HTH
>
> Gerard
>[/color]
Comment
-
Re: starting some Python script from C#
Hello. I tried to implement ypour suggestion, but an error apears:
"Exception System.Componen tModel.Win32Exc eption was thrown in debugee:
The specified executable is not a valid Win32 application.
StartWithCreate Process()
Start()
Start()
Main() - c:\Documents and Settings\Zlatko \My Documents\Sharp Develop
Projects\CS_scr ipt\CS_script\M ain.cs:32,5 "
The C# code is the following:
/*
* Created by SharpDevelop.
* User: Zlatko
* Date: 28.5.2006
* Time: 9:38
*
* To change this template use Tools | Options | Coding | Edit Standard
Headers.
*/
using System;
using System.Collecti ons.Generic;
using System.Diagnost ics;
using System.Windows. Forms;
namespace CS_script
{
class MainClass
{
public static void Main(string[] args)
{
System.Diagnost ics.ProcessStar tInfo psi =new
System.Diagnost ics.ProcessStar tInfo();
psi.FileName="m y_script.py";
psi.WorkingDire ctory=Environme nt.CurrentDirec tory;
psi.RedirectSta ndardOutput = true;
psi.WindowStyle = System.Diagnost ics.ProcessWind owStyle.Hidden;
psi.UseShellExe cute = false;
psi.CreateNoWin dow = true;
System.Diagnost ics.Process script;
script = System.Diagnost ics.Process.Sta rt(psi);
System.IO.Strea mReader myOutput = script.Standard Output;
script.WaitForE xit(2000);
if (script.HasExit ed)
{
string output = myOutput.ReadTo End();
//this.processRes ults.Text = output;
}
MessageBox.Show ("finished!" );
}
}
}
When running the program, I have the following error:
"Exception System.Componen tModel.Win32Exc eption was thrown in debugee:
The specified executable is not a valid Win32 application.
StartWithCreate Process()
Start()
Start()
Main() - c:\Documents and Settings\Zlatko \My Documents\Sharp Develop
Projects\CS_scr ipt\CS_script\M ain.cs:32,5 "
"Gerard Flanagan" <grflanagan@yah oo.co.uk> je napisao u poruci interesnoj
grupi:114872894 0.440692.166330 @i39g2000cwa.go oglegroups.com. ..[color=blue]
> tatamata wrote:[color=green]
>> Hello.
>>
>> How can I run some Python script within C# program?
>>[/color]
>
> ---------------------------------------------------------------------------------
> ProcessStartInf o startInfo;
> Process process;
> string directory;
> string pyArgs;
> string script;
>
> startInfo = new ProcessStartInf o("python");
> startInfo.Worki ngDirectory = directory;
> startInfo.Argum ents = script + " " + pyArgs;
> startInfo.UseSh ellExecute = false;
> startInfo.Creat eNoWindow = true;
> startInfo.Redir ectStandardOutp ut = true;
> startInfo.Redir ectStandardErro r = true;
>
> process = new Process();
> process.StartIn fo = startInfo;
> process.Start() ;
>
> string s;
> while ((s = process.Standar dOutput.ReadLin e()) != null)
> {
> //do something with s
> }
> ---------------------------------------------------------------------------------
>
> HTH
>
> Gerard
>[/color]
Comment
-
Re: starting some Python script from C#
> "Gerard Flanagan" <grflanagan@yah oo.co.uk> je napisao u poruci interesnoj[color=blue]
> grupi:114872894 0.440692.166330 @i39g2000cwa.go oglegroups.com. ..[color=green]
> > tatamata wrote:[color=darkred]
> >> Hello.
> >>
> >> How can I run some Python script within C# program?
> >>[/color]
> >
> > ---------------------------------------------------------------------------------
> > ProcessStartInf o startInfo;
> > Process process;
> > string directory;
> > string pyArgs;
> > string script;
> >
> > startInfo = new ProcessStartInf o("python");
> > startInfo.Worki ngDirectory = directory;
> > startInfo.Argum ents = script + " " + pyArgs;
> > startInfo.UseSh ellExecute = false;
> > startInfo.Creat eNoWindow = true;
> > startInfo.Redir ectStandardOutp ut = true;
> > startInfo.Redir ectStandardErro r = true;
> >
> > process = new Process();
> > process.StartIn fo = startInfo;
> > process.Start() ;
> >
> > string s;
> > while ((s = process.Standar dOutput.ReadLin e()) != null)
> > {
> > //do something with s
> > }
> > ---------------------------------------------------------------------------------
> >[/color][/color]
tatamata wrote:[color=blue]
> Hello. I tried to implement ypour suggestion, but an error apears:
> "Exception System.Componen tModel.Win32Exc eption was thrown in debugee:
> The specified executable is not a valid Win32 application.
>
> namespace CS_script
> {
> class MainClass
> {
> public static void Main(string[] args)
> {
>
> System.Diagnost ics.ProcessStar tInfo psi =new
> System.Diagnost ics.ProcessStar tInfo();
> psi.FileName="m y_script.py";
> psi.WorkingDire ctory=Environme nt.CurrentDirec tory;
> psi.RedirectSta ndardOutput = true;
> psi.WindowStyle = System.Diagnost ics.ProcessWind owStyle.Hidden;
> psi.UseShellExe cute = false;
> psi.CreateNoWin dow = true;
>
> System.Diagnost ics.Process script;
> script = System.Diagnost ics.Process.Sta rt(psi);
>
> System.IO.Strea mReader myOutput = script.Standard Output;
> script.WaitForE xit(2000);
> if (script.HasExit ed)
> {
> string output = myOutput.ReadTo End();
> //this.processRes ults.Text = output;
> }
> MessageBox.Show ("finished!" );
> }
> }
> }
>
> When running the program, I have the following error:
>
> "Exception System.Componen tModel.Win32Exc eption was thrown in debugee:
> The specified executable is not a valid Win32 application.
>
> StartWithCreate Process()
> Start()
> Start()
> Main() - c:\Documents and Settings\Zlatko \My Documents\Sharp Develop
> Projects\CS_scr ipt\CS_script\M ain.cs:32,5 "
>[/color]
I have no means of running C# programs at present and can't claim much
expertise in any case. A guess is that a "valid Win32 application"
means an '.exe' file, not a '.py' file.
You are assuming that a Process object is as smart as the command
interpreter ('cmd.exe') and will know to use 'python.exe' for a file
with a 'py' extension?
What happens if you use 'python.exe' (or 'cmd.exe') as your file and
the script name as argument as in the code I posted?
Gerard
(PS. This group prefers that one doesn't top-post)
Comment
-
Re: starting some Python script from C#
Hello. It seems that the following code works. And it seems that Process
object can automatically run script by using python.exe, but only if
standard output is not redirected...
/*
* Created by SharpDevelop.
* User: Zlatko
* Date: 28.5.2006
* Time: 9:38
*
* To change this template use Tools | Options | Coding | Edit Standard
Headers.
*/
using System;
using System.IO;
using System.Collecti ons.Generic;
using System.Diagnost ics;
using System.Componen tModel;
using System.Windows. Forms;
namespace CS_script
{
class MainClass
{
public static void Main(string[] args)
{
MyProcess myProcess = new MyProcess();
myProcess.Execu teScript();
MessageBox.Show ("Continue?","A pplication",
MessageBoxButto ns.OKCancel);
}
}
public class MyProcess
{
// These are the Win32 error code for file not found or access
denied.
const int ERROR_FILE_NOT_ FOUND =2;
const int ERROR_ACCESS_DE NIED = 5;
/// <summary>
/// Executes a python script.
/// </summary>
public void ExecuteScript()
{
Process myProcess = new Process();
try
{
// Get the path that stores the python script.
//string myDocumentsPath
=Environment.Ge tFolderPath(Env ironment.Specia lFolder.Persona l);
//If the script is placed in the same folder as C#
executable, set the path to current directory:
string myDocumentsPath =Environment.Cu rrentDirectory;
//Set the fully qualified script name
myProcess.Start Info.FileName = myDocumentsPath +
"\\my_script.py ";
//Execute the script:
myProcess.Start ();
//string output = myProcess.Stand ardOutput.ReadT oEnd();
//Console.WriteLi ne(output);
//Console.WriteLi ne(myProcess.St andardOutput.Re adToEnd());
//TextReader t = myProcess.Stand ardOutput;
//MessageBox.Show (t.ReadToEnd()) ;
// Wait for it to die...
myProcess.WaitF orExit();
MessageBox.Show ("Python script is successfully executed!");
}
catch (Win32Exception e)
{
if(e.NativeErro rCode == ERROR_FILE_NOT_ FOUND)
{
Console.WriteLi ne(e.Message + ". Check the path.");
}
else if (e.NativeErrorC ode == ERROR_ACCESS_DE NIED)
{
// Note that if your word processor might generate
exceptions
// such as this, which are handled first.
Console.WriteLi ne(e.Message +
". You do not have permission to print this file.");
}
}
}
}
}
Greetings,
Zlatko
"Gerard Flanagan" <grflanagan@yah oo.co.uk> je napisao u poruci interesnoj
grupi:114881519 4.860060.43810@ j73g2000cwa.goo glegroups.com.. .[color=blue][color=green]
>> "Gerard Flanagan" <grflanagan@yah oo.co.uk> je napisao u poruci interesnoj
>> grupi:114872894 0.440692.166330 @i39g2000cwa.go oglegroups.com. ..[color=darkred]
>> > tatamata wrote:
>> >> Hello.
>> >>
>> >> How can I run some Python script within C# program?
>> >>
>> >
>> > ---------------------------------------------------------------------------------
>> > ProcessStartInf o startInfo;
>> > Process process;
>> > string directory;
>> > string pyArgs;
>> > string script;
>> >
>> > startInfo = new ProcessStartInf o("python");
>> > startInfo.Worki ngDirectory = directory;
>> > startInfo.Argum ents = script + " " + pyArgs;
>> > startInfo.UseSh ellExecute = false;
>> > startInfo.Creat eNoWindow = true;
>> > startInfo.Redir ectStandardOutp ut = true;
>> > startInfo.Redir ectStandardErro r = true;
>> >
>> > process = new Process();
>> > process.StartIn fo = startInfo;
>> > process.Start() ;
>> >
>> > string s;
>> > while ((s = process.Standar dOutput.ReadLin e()) != null)
>> > {
>> > //do something with s
>> > }
>> > ---------------------------------------------------------------------------------
>> >[/color][/color]
>
> tatamata wrote:[color=green]
>> Hello. I tried to implement ypour suggestion, but an error apears:
>> "Exception System.Componen tModel.Win32Exc eption was thrown in debugee:
>> The specified executable is not a valid Win32 application.
>>
>> namespace CS_script
>> {
>> class MainClass
>> {
>> public static void Main(string[] args)
>> {
>>
>> System.Diagnost ics.ProcessStar tInfo psi =new
>> System.Diagnost ics.ProcessStar tInfo();
>> psi.FileName="m y_script.py";
>> psi.WorkingDire ctory=Environme nt.CurrentDirec tory;
>> psi.RedirectSta ndardOutput = true;
>> psi.WindowStyle = System.Diagnost ics.ProcessWind owStyle.Hidden;
>> psi.UseShellExe cute = false;
>> psi.CreateNoWin dow = true;
>>
>> System.Diagnost ics.Process script;
>> script = System.Diagnost ics.Process.Sta rt(psi);
>>
>> System.IO.Strea mReader myOutput = script.Standard Output;
>> script.WaitForE xit(2000);
>> if (script.HasExit ed)
>> {
>> string output = myOutput.ReadTo End();
>> //this.processRes ults.Text = output;
>> }
>> MessageBox.Show ("finished!" );
>> }
>> }
>> }
>>
>> When running the program, I have the following error:
>>
>> "Exception System.Componen tModel.Win32Exc eption was thrown in debugee:
>> The specified executable is not a valid Win32 application.
>>
>> StartWithCreate Process()
>> Start()
>> Start()
>> Main() - c:\Documents and Settings\Zlatko \My Documents\Sharp Develop
>> Projects\CS_scr ipt\CS_script\M ain.cs:32,5 "
>>[/color]
>
>
> I have no means of running C# programs at present and can't claim much
> expertise in any case. A guess is that a "valid Win32 application"
> means an '.exe' file, not a '.py' file.
>
> You are assuming that a Process object is as smart as the command
> interpreter ('cmd.exe') and will know to use 'python.exe' for a file
> with a 'py' extension?
>
> What happens if you use 'python.exe' (or 'cmd.exe') as your file and
> the script name as argument as in the code I posted?
>
> Gerard
>
>
> (PS. This group prefers that one doesn't top-post)
>[/color]
Comment
-
Re: starting some Python script from C#
> >> "Gerard Flanagan" <grflanagan@yah oo.co.uk> je napisao u poruci interesnoj[color=blue][color=green][color=darkred]
> >> grupi:114872894 0.440692.166330 @i39g2000cwa.go oglegroups.com. ..
> >> > tatamata wrote:
> >> >> Hello.
> >> >>
> >> >> How can I run some Python script within C# program?
> >> >>
> >> >
> >> > ---------------------------------------------------------------------------------
> >> > ProcessStartInf o startInfo;
> >> > Process process;
> >> > string directory;
> >> > string pyArgs;
> >> > string script;
> >> >
> >> > startInfo = new ProcessStartInf o("python");
> >> > startInfo.Worki ngDirectory = directory;
> >> > startInfo.Argum ents = script + " " + pyArgs;
> >> > startInfo.UseSh ellExecute = false;
> >> > startInfo.Creat eNoWindow = true;
> >> > startInfo.Redir ectStandardOutp ut = true;
> >> > startInfo.Redir ectStandardErro r = true;
> >> >
> >> > process = new Process();
> >> > process.StartIn fo = startInfo;
> >> > process.Start() ;
> >> >
> >> > string s;
> >> > while ((s = process.Standar dOutput.ReadLin e()) != null)
> >> > {
> >> > //do something with s
> >> > }
> >> > ---------------------------------------------------------------------------------
> >> >[/color]
> >
> > tatamata wrote:[color=darkred]
> >> Hello. I tried to implement ypour suggestion, but an error apears:
> >> "Exception System.Componen tModel.Win32Exc eption was thrown in debugee:
> >> The specified executable is not a valid Win32 application.
> >>
> >> namespace CS_script
> >> {
> >> class MainClass
> >> {
> >> public static void Main(string[] args)
> >> {
> >>
> >> System.Diagnost ics.ProcessStar tInfo psi =new
> >> System.Diagnost ics.ProcessStar tInfo();
> >> psi.FileName="m y_script.py";
> >> psi.WorkingDire ctory=Environme nt.CurrentDirec tory;
> >> psi.RedirectSta ndardOutput = true;
> >> psi.WindowStyle = System.Diagnost ics.ProcessWind owStyle.Hidden;
> >> psi.UseShellExe cute = false;
> >> psi.CreateNoWin dow = true;
> >>
> >> System.Diagnost ics.Process script;
> >> script = System.Diagnost ics.Process.Sta rt(psi);
> >>
> >> System.IO.Strea mReader myOutput = script.Standard Output;
> >> script.WaitForE xit(2000);
> >> if (script.HasExit ed)
> >> {
> >> string output = myOutput.ReadTo End();
> >> //this.processRes ults.Text = output;
> >> }
> >> MessageBox.Show ("finished!" );
> >> }
> >> }
> >> }
> >>
> >> When running the program, I have the following error:
> >>
> >> "Exception System.Componen tModel.Win32Exc eption was thrown in debugee:
> >> The specified executable is not a valid Win32 application.
> >>
> >> StartWithCreate Process()
> >> Start()
> >> Start()
> >> Main() - c:\Documents and Settings\Zlatko \My Documents\Sharp Develop
> >> Projects\CS_scr ipt\CS_script\M ain.cs:32,5 "
> >>[/color]
> >
> >
> > I have no means of running C# programs at present and can't claim much
> > expertise in any case. A guess is that a "valid Win32 application"
> > means an '.exe' file, not a '.py' file.
> >
> > You are assuming that a Process object is as smart as the command
> > interpreter ('cmd.exe') and will know to use 'python.exe' for a file
> > with a 'py' extension?
> >
> > What happens if you use 'python.exe' (or 'cmd.exe') as your file and
> > the script name as argument as in the code I posted?
> >
> > Gerard
> >
> >
> > (PS. This group prefers that one doesn't top-post)
> >[/color][/color]
tatamata wrote:[color=blue]
> Hello. It seems that the following code works. And it seems that Process
> object can automatically run script by using python.exe, but only if
> standard output is not redirected...
>
> class MainClass
> {
> public static void Main(string[] args)
> {
> MyProcess myProcess = new MyProcess();
> myProcess.Execu teScript();
> MessageBox.Show ("Continue?","A pplication",
> MessageBoxButto ns.OKCancel);
> }
> }
> public class MyProcess
> {
> // These are the Win32 error code for file not found or access
> denied.
> const int ERROR_FILE_NOT_ FOUND =2;
> const int ERROR_ACCESS_DE NIED = 5;
>
> /// <summary>
> /// Executes a python script.
> /// </summary>
> public void ExecuteScript()
> {
> Process myProcess = new Process();
>
> try
> {
> // Get the path that stores the python script.
> //string myDocumentsPath
> =Environment.Ge tFolderPath(Env ironment.Specia lFolder.Persona l);
> //If the script is placed in the same folder as C#
> executable, set the path to current directory:
> string myDocumentsPath =Environment.Cu rrentDirectory;
>
> //Set the fully qualified script name
> myProcess.Start Info.FileName = myDocumentsPath +
> "\\my_script.py ";
>
> //Execute the script:
> myProcess.Start ();
>
> // Wait for it to die...
> myProcess.WaitF orExit();
>
> MessageBox.Show ("Python script is successfully executed!");
>
> }
> catch (Win32Exception e)
> {
> if(e.NativeErro rCode == ERROR_FILE_NOT_ FOUND)
> {
> Console.WriteLi ne(e.Message + ". Check the path.");
> }
>
> else if (e.NativeErrorC ode == ERROR_ACCESS_DE NIED)
> {
> // Note that if your word processor might generate
> exceptions
> // such as this, which are handled first.
> Console.WriteLi ne(e.Message +
> ". You do not have permission to print this file.");
> }
> }
> }
> }
>
> Greetings,
>
> Zlatko
>[/color]
Ok. Glad you have a successful outcome. See the following for an
asynchronous approach with multiple threads:
[color=blue][color=green]
> >
> > (PS. This group prefers that one doesn't top-post)
> >[/color][/color]
Gerard
Comment
Comment