need to extend this C code so that it initiates this python script (python C api)
hi i need help with extending this http://paste.pound-python.org/show/8918/
c code so that it can initiate this python script
http://paste.pound-python.org/show/8917/
and export file path here..
btw I tried to run following python code :
#include python2.3/Python.h //changed this to python2.7/Python.h
didn't work the I changed it to Python.h
// Error msg : fatal
error: Python.h : no file or directory compilation terminated
//python-dev and
python2.7-dev is already installed.
void process_expression(char* filename,
int num,
char** exp)
{
FILE* exp_file;
// Initialize a global variable for
// display of expression results
PyRun_SimpleString(x = 0);
// Open and execute the file of
// functions to be made available
// to user expressions
exp_file = fopen(filename, r);
PyRun_SimpleFile(exp_file, exp);
// Iterate through the expressions
// and execute them
while(num--) {
PyRun_SimpleString(*exp++);
PyRun_SimpleString(print x);
}
}
int main(int argc, char** argv)
{
Py_Initialize();
if(argc != 3) {
printf(Usage: %s FILENAME EXPRESSION+\n);
return 1;
}
process_expression(argv[1], argc - 1, argv + 2);
return 0;
}
thanks
aregee
Ar
--
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Re: Python script and C++
In [EMAIL PROTECTED], Ravi Teja wrote: I am new to python and currently I am working on a traffic simulation which I plan to define the various agents using scripting. It's kind of like scripting for non-playable character in games. I am thinking of using python for this but I am concerned with running time. Is scripting a lot slower compared to direct implementation in C++? Does compiling the script help in any way? Python is perfectly suitable for this use. Python was in use in video games in this way when computers were a lot slower. There's a difference between simulations and games. The simulation will not always be observed by a human being so it runs as fast as possible. In games the speed of NPCs is usually limited to a level the player can deal with. But I think Python is fine for such a task. The only way to find out if it may be to slow is writing a prototype and measure. Maybe it's a good idea to design the API for the NPCs independent from the language so you can also write them in C++ or another scripting language. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: Python script and C++
On Tue, 28 Nov 2006 10:12:23 +0100, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote: In [EMAIL PROTECTED], Ravi Teja wrote: I am new to python and currently I am working on a traffic simulation which I plan to define the various agents using scripting. It's kind of like scripting for non-playable character in games. I am thinking of using python for this but I am concerned with running time. Is scripting a lot slower compared to direct implementation in C++? Does compiling the script help in any way? Python is perfectly suitable for this use. Python was in use in video games in this way when computers were a lot slower. There's a difference between simulations and games. The simulation will not always be observed by a human being so it runs as fast as possible. In games the speed of NPCs is usually limited to a level the player can deal with. Yeah. Simulation can mean running for a week on the best hardware available, with the most optimized code you can come up with. And a week may be acceptable, while two weeks are not. But I think Python is fine for such a task. I am not so sure, but ... The only way to find out if it may be to slow is writing a prototype and measure. ... this is a good approach. Maybe it's a good idea to design the API for the NPCs independent from the language so you can also write them in C++ or another scripting language. However, if that API requires thousands of calls per second during simulation time, it doesn't help speed much, because calling C code from Python is a pretty heavy thing in itself. The big win is when you spend a lot of uninterrupted CPU time in C code. One approach is to write the executive engine in C++ (once again: if needed) and the compiler/configuration subsystem -- the thing that generates the simulated world -- in Python. That's a perfect place for a flexible, high-level language. /Jorgen -- // Jorgen Grahn grahn@Ph'nglui mglw'nafh Cthulhu \X/ snipabacken.dyndns.org R'lyeh wgah'nagl fhtagn! -- http://mail.python.org/mailman/listinfo/python-list
Python script and C++
Hi all, I am new to python and currently I am working on a traffic simulation which I plan to define the various agents using scripting. It's kind of like scripting for non-playable character in games. I am thinking of using python for this but I am concerned with running time. Is scripting a lot slower compared to direct implementation in C++? Does compiling the script help in any way? Also, can anyone recommend me a book that covers python in general as well as C++ binding? Thanks. Thuan Seah Tan -- http://mail.python.org/mailman/listinfo/python-list
Re: Python script and C++
Thuan Seah Tan wrote: Hi all, I am new to python and currently I am working on a traffic simulation which I plan to define the various agents using scripting. It's kind of like scripting for non-playable character in games. I am thinking of using python for this but I am concerned with running time. Is scripting a lot slower compared to direct implementation in C++? Does compiling the script help in Learning Python is a good book to start learning Python. I don't think you'll be better off in C++. If speed is of utmost importance for the whole implementation, then I suggest C++ but well coded Python runs atleast/near to C++ implementation. Otherwise, you can atleast code the speed-savvy part of the implementation in C++. Ofcourse, Python object model is based on a virtual machine (called PVM) which accounts for slower start-up due to native function call conversion but you'll find that learning curve is only a tiny fraction compared to C++. And you'll surely love Python. =) any way? Also, can anyone recommend me a book that covers python in general as well as C++ binding? Thanks. Progamming in Python is another excellent book that might be of help. If you are developing on windows machine then http://aspn.activestate.com/ASPN/Python has some helpful recipes. C++ bindings in Python are handled by extending python objects and manipulating it from C++ codes using the Python headers. Also, http://python.org/docs should be a good reference. Also Google for vaults of parnassus and Fredrik lundh's guide on Python. Goodluck! -- thanks, nepBabu.cx c c .-.,;() .'`~C.-.c =W= -- http://mail.python.org/mailman/listinfo/python-list
Re: Python script and C++
Thuan Seah Tan wrote: Hi all, I am new to python and currently I am working on a traffic simulation which I plan to define the various agents using scripting. It's kind of like scripting for non-playable character in games. I am thinking of using python for this but I am concerned with running time. Is scripting a lot slower compared to direct implementation in C++? Does compiling the script help in any way? Also, can anyone recommend me a book that covers python in general as well as C++ binding? Thanks. Even if pure python turns out to be slow for some critical parts of your application, there are quite a few ways to deal with it: psyco, pyrex, weave/blitz, ctypes, SWIG, Boost-python, SIP, CXX, SCXX, hand-written C extensions and perhaps more. Visit http://www.scipy.org/PerformancePython for an example of taking a simple pure Python function and boosting it using several different tools. Check out the final comparison table first; the pyrex version is less than half a second slower than the C++. George -- http://mail.python.org/mailman/listinfo/python-list
Re: Python script and C++
Thuan Seah Tan wrote: Hi all, I am new to python and currently I am working on a traffic simulation which I plan to define the various agents using scripting. It's kind of like scripting for non-playable character in games. I am thinking of using python for this but I am concerned with running time. Is scripting a lot slower compared to direct implementation in C++? Does compiling the script help in any way? Python is perfectly suitable for this use. Python was in use in video games in this way when computers were a lot slower. I doubt that you will need to bother compiling the script or see any observable enhancement if you do. One example I can remember is Kingdom Under Fire (2001). -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
volcano wrote:
volcano wrote:
Hello, folks!
A trivial question - I have a working Python script that I have to
invoke from C++ code. No fancy stuff - just run the whole script with
its parameters. No callbacks, no signalling - nada, just
stupid,primitive, straightforward call.
And while there is a lot of help on embedding, I could not find out how
to run script as a whole.SOS
Thanks a lot to all of you who cared to answer! Eventually it was
::CreateProcess, and it works!
I used to find http://pinvoke.net a good resource when I was doing
Active Directory stuff. Just for interest's sake, cutting and pasting
from the CreateProcess page, the following arcana will start Python (
again from C#, but here you can see the internals at least):
using System;
using System.Runtime.InteropServices;
class Class1
{
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct STARTUPINFO
{
Int32 cb;
string lpReserved;
string lpDesktop;
string lpTitle;
Int32 dwX;
Int32 dwY;
Int32 dwXSize;
Int32 dwYSize;
Int32 dwXCountChars;
Int32 dwYCountChars;
Int32 dwFillAttribute;
Int32 dwFlags;
Int16 wShowWindow;
Int16 cbReserved2;
IntPtr lpReserved2;
IntPtr hStdInput;
IntPtr hStdOutput;
IntPtr hStdError;
}
[StructLayout(LayoutKind.Sequential)]
public struct PROCESS_INFORMATION
{
public IntPtr hProcess;
IntPtr hThread;
public int dwProcessId;
public int dwThreadId;
}
[StructLayout(LayoutKind.Sequential)]
public struct SECURITY_ATTRIBUTES
{
public int nLength;
public IntPtr lpSecurityDescriptor;
public int bInheritHandle;
}
[DllImport(kernel32.dll)]
public static extern bool CreateProcess(string lpApplicationName,
string lpCommandLine, ref SECURITY_ATTRIBUTES
lpProcessAttributes,
ref SECURITY_ATTRIBUTES lpThreadAttributes, bool
bInheritHandles,
uint dwCreationFlags, IntPtr lpEnvironment, string
lpCurrentDirectory,
ref STARTUPINFO lpStartupInfo,
out PROCESS_INFORMATION lpProcessInformation);
[STAThread]
static void Main(string[] args)
{
const uint NORMAL_PRIORITY_CLASS = 0x0020;
bool retValue;
string Application = @c:\python\python24\python.exe;
string CommandLine = ;
PROCESS_INFORMATION pInfo = new PROCESS_INFORMATION();
STARTUPINFO sInfo = new STARTUPINFO();
SECURITY_ATTRIBUTES pSec = new SECURITY_ATTRIBUTES();
SECURITY_ATTRIBUTES tSec = new SECURITY_ATTRIBUTES();
pSec.nLength = Marshal.SizeOf(pSec);
tSec.nLength = Marshal.SizeOf(tSec);
retValue = CreateProcess(Application,CommandLine,
ref pSec,ref tSec,false,NORMAL_PRIORITY_CLASS,
IntPtr.Zero,null,ref sInfo,out pInfo);
}
}
--
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Re: Running Python script from C++ code(.NET)
volcano wrote:
volcano wrote:
Hello, folks!
A trivial question - I have a working Python script that I have to
invoke from C++ code. No fancy stuff - just run the whole script with
its parameters. No callbacks, no signalling - nada, just
stupid,primitive, straightforward call.
And while there is a lot of help on embedding, I could not find out how
to run script as a whole.SOS
Thanks a lot to all of you who cared to answer! Eventually it was
::CreateProcess, and it works!
I used to find http://pinvoke.net a good resource when I was doing
Active Directory stuff. Just for interest's sake, cutting and pasting
from the CreateProcess page, the following arcana will start Python (
again from C#, but here you can see the internals at least):
using System;
using System.Runtime.InteropServices;
class Class1
{
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct STARTUPINFO
{
Int32 cb;
string lpReserved;
string lpDesktop;
string lpTitle;
Int32 dwX;
Int32 dwY;
Int32 dwXSize;
Int32 dwYSize;
Int32 dwXCountChars;
Int32 dwYCountChars;
Int32 dwFillAttribute;
Int32 dwFlags;
Int16 wShowWindow;
Int16 cbReserved2;
IntPtr lpReserved2;
IntPtr hStdInput;
IntPtr hStdOutput;
IntPtr hStdError;
}
[StructLayout(LayoutKind.Sequential)]
public struct PROCESS_INFORMATION
{
public IntPtr hProcess;
IntPtr hThread;
public int dwProcessId;
public int dwThreadId;
}
[StructLayout(LayoutKind.Sequential)]
public struct SECURITY_ATTRIBUTES
{
public int nLength;
public IntPtr lpSecurityDescriptor;
public int bInheritHandle;
}
[DllImport(kernel32.dll)]
public static extern bool CreateProcess(string lpApplicationName,
string lpCommandLine, ref SECURITY_ATTRIBUTES
lpProcessAttributes,
ref SECURITY_ATTRIBUTES lpThreadAttributes, bool
bInheritHandles,
uint dwCreationFlags, IntPtr lpEnvironment, string
lpCurrentDirectory,
ref STARTUPINFO lpStartupInfo,
out PROCESS_INFORMATION lpProcessInformation);
[STAThread]
static void Main(string[] args)
{
const uint NORMAL_PRIORITY_CLASS = 0x0020;
bool retValue;
string Application = @c:\python\python24\python.exe;
string CommandLine = ;
PROCESS_INFORMATION pInfo = new PROCESS_INFORMATION();
STARTUPINFO sInfo = new STARTUPINFO();
SECURITY_ATTRIBUTES pSec = new SECURITY_ATTRIBUTES();
SECURITY_ATTRIBUTES tSec = new SECURITY_ATTRIBUTES();
pSec.nLength = Marshal.SizeOf(pSec);
tSec.nLength = Marshal.SizeOf(tSec);
retValue = CreateProcess(Application,CommandLine,
ref pSec,ref tSec,false,NORMAL_PRIORITY_CLASS,
IntPtr.Zero,null,ref sInfo,out pInfo);
}
}
--
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Re: Running Python script from C++ code(.NET)
volcano wrote: Hello, folks! A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. And while there is a lot of help on embedding, I could not find out how to run script as a whole.SOS Thanks a lot to all of you who cared to answer! Eventually it was ::CreateProcess, and it works! But here is another question for gurus: sometimes my script fails, and I cannot figure out why. OK, I can - especially since I terminate it with sys.exit(), but I want my app to know too. GetLastError returns 0 - for the obvious reason that this is the value Python interpreter returns with. But how can I get the script return value? -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
In article [EMAIL PROTECTED], volcano [EMAIL PROTECTED] wrote: . . . But here is another question for gurus: sometimes my script fails, and I cannot figure out why. OK, I can - especially since I terminate it with sys.exit(), but I want my app to know too. GetLastError returns 0 - for the obvious reason that this is the value Python interpreter returns with. But how can I get the script return value? Your question confuses me. Do you realize Python can exit with sys.exit(0) or sys.exit(1) for example, to distinguish differenet exit conditions? When you do these, GetLastError() will NOT always yield 0. -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
volcano [EMAIL PROTECTED] wrote: A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. In a unix based environment I would use fork + exec*. IIRC in Windows you should have a CreateProcess function call. http://goffconcepts.com/techarticles/development/cpp/createprocess.html http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllpro c/base/createprocess.asp You could also try system, but it's generally considered insecure. -- blog: http://www.akropolix.net/rik0/blogs | Uccidete i filosofi, site: http://www.akropolix.net/rik0/ | tenetevi riso e forum: http://www.akropolix.net/forum/ | bacchette per voi. -- http://mail.python.org/mailman/listinfo/python-list
Running Python script from C++ code(.NET)
Hello, folks! A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. And while there is a lot of help on embedding, I could not find out how to run script as a whole.SOS -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
volcano wrote: Hello, folks! A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. And while there is a lot of help on embedding, I could not find out how to run script as a whole.SOS In C#: http://groups.google.com/group/comp.lang.python/browse_frm/thread/da2a675da29b0bd/197b6a89095ef930?lnk=stq=rnum=4#197b6a89095ef930 hth Gerard -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
Gerard Flanagan wrote: volcano wrote: Hello, folks! A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. And while there is a lot of help on embedding, I could not find out how to run script as a whole.SOS In C#: http://groups.google.com/group/comp.lang.python/browse_frm/thread/da2a675da29b0bd/197b6a89095ef930?lnk=stq=rnum=4#197b6a89095ef930 hth Gerard Thanks for fast response, alas - it did not! My problem is - application in C++ used to use external application, which does not work well. So I sort of reproduced the functionality in Python script, but now I am stuck, unable to run it properly. -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
volcano wrote: Gerard Flanagan wrote: volcano wrote: Hello, folks! A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. And while there is a lot of help on embedding, I could not find out how to run script as a whole.SOS In C#: http://groups.google.com/group/comp.lang.python/browse_frm/thread/da2a675da29b0bd/197b6a89095ef930?lnk=stq=rnum=4#197b6a89095ef930 hth Gerard Thanks for fast response, alas - it did not! My problem is - application in C++ used to use external application, which does not work well. So I sort of reproduced the functionality in Python script, but now I am stuck, unable to run it properly. Maybe my understanding is wrong, but can't managed (.NET) C++ call into any other managed assembly, in this case (I think) System.Diagnostics? Gerard -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
Gerard Flanagan wrote: volcano wrote: Gerard Flanagan wrote: volcano wrote: Hello, folks! A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. And while there is a lot of help on embedding, I could not find out how to run script as a whole.SOS In C#: http://groups.google.com/group/comp.lang.python/browse_frm/thread/da2a675da29b0bd/197b6a89095ef930?lnk=stq=rnum=4#197b6a89095ef930 hth Gerard Thanks for fast response, alas - it did not! My problem is - application in C++ used to use external application, which does not work well. So I sort of reproduced the functionality in Python script, but now I am stuck, unable to run it properly. Maybe my understanding is wrong, but can't managed (.NET) C++ call into any other managed assembly, in this case (I think) System.Diagnostics? Gerard My application is written in regular C++:( -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. And while there is a lot of help on embedding, I could not find out how to run script as a whole.SOS System::Diagnostics::Process::Start -- http://mail.python.org/mailman/listinfo/python-list
Re: Running Python script from C++ code(.NET)
A trivial question - I have a working Python script that I have to invoke from C++ code. No fancy stuff - just run the whole script with its parameters. No callbacks, no signalling - nada, just stupid,primitive, straightforward call. And while there is a lot of help on embedding, I could not find out how to run script as a whole.SOS System::Diagnostics::Process::Start -- http://mail.python.org/mailman/listinfo/python-list
Re: starting some Python script from C#
Gerard Flanagan [EMAIL PROTECTED] je napisao u poruci interesnoj
grupi:[EMAIL PROTECTED]
tatamata wrote:
Hello.
How can I run some Python script within C# program?
-
ProcessStartInfo startInfo;
Process process;
string directory;
string pyArgs;
string script;
startInfo = new ProcessStartInfo(python);
startInfo.WorkingDirectory = directory;
startInfo.Arguments = script + + pyArgs;
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = true;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
process = new Process();
process.StartInfo = startInfo;
process.Start();
string s;
while ((s = process.StandardOutput.ReadLine()) != null)
{
//do something with s
}
-
tatamata wrote:
Hello. I tried to implement ypour suggestion, but an error apears:
Exception System.ComponentModel.Win32Exception 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.Diagnostics.ProcessStartInfo psi =new
System.Diagnostics.ProcessStartInfo();
psi.FileName=my_script.py;
psi.WorkingDirectory=Environment.CurrentDirectory;
psi.RedirectStandardOutput = true;
psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
psi.UseShellExecute = false;
psi.CreateNoWindow = true;
System.Diagnostics.Process script;
script = System.Diagnostics.Process.Start(psi);
System.IO.StreamReader myOutput = script.StandardOutput;
script.WaitForExit(2000);
if (script.HasExited)
{
string output = myOutput.ReadToEnd();
//this.processResults.Text = output;
}
MessageBox.Show(finished!);
}
}
}
When running the program, I have the following error:
Exception System.ComponentModel.Win32Exception was thrown in debugee:
The specified executable is not a valid Win32 application.
StartWithCreateProcess()
Start()
Start()
Main() - c:\Documents and Settings\Zlatko\My Documents\SharpDevelop
Projects\CS_script\CS_script\Main.cs:32,5
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)
tatamata wrote:
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.ExecuteScript();
MessageBox.Show(Continue?,Application,
MessageBoxButtons.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_DENIED = 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.GetFolderPath(Environment.SpecialFolder.Personal);
//If the script is placed in the same folder as C#
executable, set the path to current directory:
string myDocumentsPath=Environment.CurrentDirectory;
//Set the fully qualified script name
myProcess.StartInfo.FileName = myDocumentsPath +
\\my_script.py;
//Execute the script:
myProcess.Start();
// Wait for it to die...
myProcess.WaitForExit();
MessageBox.Show (Python script is successfully executed!);
}
catch (Win32Exception e)
{
if(e.NativeErrorCode == ERROR_FILE_NOT_FOUND)
{
Console.WriteLine(e.Message + . Check the path
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.Collections.Generic;
using System.Diagnostics;
using System.ComponentModel;
using System.Windows.Forms;
namespace CS_script
{
class MainClass
{
public static void Main(string[] args)
{
MyProcess myProcess = new MyProcess();
myProcess.ExecuteScript();
MessageBox.Show(Continue?,Application,
MessageBoxButtons.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_DENIED = 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.GetFolderPath(Environment.SpecialFolder.Personal);
//If the script is placed in the same folder as C#
executable, set the path to current directory:
string myDocumentsPath=Environment.CurrentDirectory;
//Set the fully qualified script name
myProcess.StartInfo.FileName = myDocumentsPath +
\\my_script.py;
//Execute the script:
myProcess.Start();
//string output = myProcess.StandardOutput.ReadToEnd();
//Console.WriteLine(output);
//Console.WriteLine(myProcess.StandardOutput.ReadToEnd());
//TextReader t = myProcess.StandardOutput;
//MessageBox.Show(t.ReadToEnd());
// Wait for it to die...
myProcess.WaitForExit();
MessageBox.Show (Python script is successfully executed!);
}
catch (Win32Exception e)
{
if(e.NativeErrorCode == ERROR_FILE_NOT_FOUND)
{
Console.WriteLine(e.Message + . Check the path.);
}
else if (e.NativeErrorCode == ERROR_ACCESS_DENIED)
{
// Note that if your word processor might generate
exceptions
// such as this, which are handled first.
Console.WriteLine(e.Message +
. You do not have permission to print this file.);
}
}
}
}
}
Greetings,
Zlatko
Gerard Flanagan [EMAIL PROTECTED] je napisao u poruci interesnoj
grupi:[EMAIL PROTECTED]
Gerard Flanagan [EMAIL PROTECTED] je napisao u poruci interesnoj
grupi:[EMAIL PROTECTED]
tatamata wrote:
Hello.
How can I run some Python script within C# program?
-
ProcessStartInfo startInfo;
Process process;
string directory;
string pyArgs;
string script;
startInfo = new ProcessStartInfo(python);
startInfo.WorkingDirectory = directory;
startInfo.Arguments = script + + pyArgs;
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = true;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
process = new Process();
process.StartInfo = startInfo;
process.Start();
string s;
while ((s = process.StandardOutput.ReadLine()) != null)
{
//do something with s
}
-
tatamata wrote:
Hello. I tried to implement ypour suggestion, but an error apears:
Exception System.ComponentModel.Win32Exception 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.Diagnostics.ProcessStartInfo psi =new
System.Diagnostics.ProcessStartInfo();
psi.FileName=my_script.py;
psi.WorkingDirectory=Environment.CurrentDirectory;
psi.RedirectStandardOutput = true;
psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
psi.UseShellExecute = false;
psi.CreateNoWindow = true;
System.Diagnostics.Process script;
script = System.Diagnostics.Process.Start(psi);
System.IO.StreamReader myOutput = script.StandardOutput;
script.WaitForExit(2000);
if (script.HasExited)
{
string output
Re: starting some Python script from C#
Hello. I tried to implement ypour suggestion, but an error apears:
Exception System.ComponentModel.Win32Exception was thrown in debugee:
The specified executable is not a valid Win32 application.
StartWithCreateProcess()
Start()
Start()
Main() - c:\Documents and Settings\Zlatko\My Documents\SharpDevelop
Projects\CS_script\CS_script\Main.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.Collections.Generic;
using System.Diagnostics;
using System.Windows.Forms;
namespace CS_script
{
class MainClass
{
public static void Main(string[] args)
{
System.Diagnostics.ProcessStartInfo psi =new
System.Diagnostics.ProcessStartInfo();
psi.FileName=my_script.py;
psi.WorkingDirectory=Environment.CurrentDirectory;
psi.RedirectStandardOutput = true;
psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
psi.UseShellExecute = false;
psi.CreateNoWindow = true;
System.Diagnostics.Process script;
script = System.Diagnostics.Process.Start(psi);
System.IO.StreamReader myOutput = script.StandardOutput;
script.WaitForExit(2000);
if (script.HasExited)
{
string output = myOutput.ReadToEnd();
//this.processResults.Text = output;
}
MessageBox.Show(finished!);
}
}
}
When running the program, I have the following error:
Exception System.ComponentModel.Win32Exception was thrown in debugee:
The specified executable is not a valid Win32 application.
StartWithCreateProcess()
Start()
Start()
Main() - c:\Documents and Settings\Zlatko\My Documents\SharpDevelop
Projects\CS_script\CS_script\Main.cs:32,5
Gerard Flanagan [EMAIL PROTECTED] je napisao u poruci interesnoj
grupi:[EMAIL PROTECTED]
tatamata wrote:
Hello.
How can I run some Python script within C# program?
-
ProcessStartInfo startInfo;
Process process;
string directory;
string pyArgs;
string script;
startInfo = new ProcessStartInfo(python);
startInfo.WorkingDirectory = directory;
startInfo.Arguments = script + + pyArgs;
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = true;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
process = new Process();
process.StartInfo = startInfo;
process.Start();
string s;
while ((s = process.StandardOutput.ReadLine()) != null)
{
//do something with s
}
-
HTH
Gerard
--
http://mail.python.org/mailman/listinfo/python-list
Re: starting some Python script from C#
Gerard Flanagan [EMAIL PROTECTED] je napisao u poruci interesnoj
grupi:[EMAIL PROTECTED]
tatamata wrote:
Hello.
How can I run some Python script within C# program?
-
ProcessStartInfo startInfo;
Process process;
string directory;
string pyArgs;
string script;
startInfo = new ProcessStartInfo(python);
startInfo.WorkingDirectory = directory;
startInfo.Arguments = script + + pyArgs;
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = true;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
process = new Process();
process.StartInfo = startInfo;
process.Start();
string s;
while ((s = process.StandardOutput.ReadLine()) != null)
{
//do something with s
}
-
tatamata wrote:
Hello. I tried to implement ypour suggestion, but an error apears:
Exception System.ComponentModel.Win32Exception 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.Diagnostics.ProcessStartInfo psi =new
System.Diagnostics.ProcessStartInfo();
psi.FileName=my_script.py;
psi.WorkingDirectory=Environment.CurrentDirectory;
psi.RedirectStandardOutput = true;
psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
psi.UseShellExecute = false;
psi.CreateNoWindow = true;
System.Diagnostics.Process script;
script = System.Diagnostics.Process.Start(psi);
System.IO.StreamReader myOutput = script.StandardOutput;
script.WaitForExit(2000);
if (script.HasExited)
{
string output = myOutput.ReadToEnd();
//this.processResults.Text = output;
}
MessageBox.Show(finished!);
}
}
}
When running the program, I have the following error:
Exception System.ComponentModel.Win32Exception was thrown in debugee:
The specified executable is not a valid Win32 application.
StartWithCreateProcess()
Start()
Start()
Main() - c:\Documents and Settings\Zlatko\My Documents\SharpDevelop
Projects\CS_script\CS_script\Main.cs:32,5
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)
--
http://mail.python.org/mailman/listinfo/python-list
starting some Python script from C#
Hello. How can I run some Python script within C# program? Thanks, Zlatko -- http://mail.python.org/mailman/listinfo/python-list
Re: starting some Python script from C#
tatamata wrote:
Hello.
How can I run some Python script within C# program?
-
ProcessStartInfo startInfo;
Process process;
string directory;
string pyArgs;
string script;
startInfo = new ProcessStartInfo(python);
startInfo.WorkingDirectory = directory;
startInfo.Arguments = script + + pyArgs;
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = true;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
process = new Process();
process.StartInfo = startInfo;
process.Start();
string s;
while ((s = process.StandardOutput.ReadLine()) != null)
{
//do something with s
}
-
HTH
Gerard
--
http://mail.python.org/mailman/listinfo/python-list
Re: starting some Python script from C#
thanks.
Gerard Flanagan [EMAIL PROTECTED] je napisao u poruci interesnoj
grupi:[EMAIL PROTECTED]
tatamata wrote:
Hello.
How can I run some Python script within C# program?
-
ProcessStartInfo startInfo;
Process process;
string directory;
string pyArgs;
string script;
startInfo = new ProcessStartInfo(python);
startInfo.WorkingDirectory = directory;
startInfo.Arguments = script + + pyArgs;
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = true;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
process = new Process();
process.StartInfo = startInfo;
process.Start();
string s;
while ((s = process.StandardOutput.ReadLine()) != null)
{
//do something with s
}
-
HTH
Gerard
--
http://mail.python.org/mailman/listinfo/python-list
