Re: Problem embedding Python.
On Oct 27, 7:48 pm, Gabriel Genellina gagsl-...@yahoo.com.ar wrote: En Tue, 27 Oct 2009 06:36:18 -0300, Brandon Keown keown.bran...@gmail.com escribió: On Oct 27, 2:47 am, Gabriel Genellina gagsl-...@yahoo.com.ar wrote: You didn't test for the fopen result; are you sure test.py exists in the current directory at the time you run it? Ok, so I assumed that the file, if supplied without a path, would use current working directory, which was evidently a false assumption. Now that you've solved your problem, revise your conclusion. A file without a path *is* searched in the current working directory - but that directory may not be the one you think it is. -- Gabriel Genellina I'm not sure what you mean. I executed the program from the directory the file was in, they were in the same directory. And when a program executes from a path in CMD in windows, that is supposed to be the CWD. I'm not sure what it would be set to if not that... -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem embedding Python.
O...K... -- http://mail.python.org/mailman/listinfo/python-list
Problem embedding Python.
I am going to try to embed python in an application, but in simple
testing, I could not get it to work. The following code seems like it
should work, but it crashes, and I have tried several things. What
could I be doing wrong?
#include Python.h
int main(int argc, char* argv[])
{
FILE* fp = fopen(test.py,r);
Py_Initialize();
PyRun_SimpleFile(fp,test.py);
Py_Finalize();
return 0;
}
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Re: Problem embedding Python.
On Oct 27, 2:47 am, Gabriel Genellina gagsl-...@yahoo.com.ar
wrote:
Crashes, how? Try running inside a debugger to see where it crashes, or at
least put a few printf.
You didn't test for the fopen result; are you sure test.py exists in the
current directory at the time you run it?
--
Gabriel Genellina
Ok, so I assumed that the file, if supplied without a path, would use
current working directory, which was evidently a false assumption. I
put in an if statement to check to see if the pointer was null which
it was. So I fully qualified the path in the test file. Now it
throws an unhandled exception when it goes to execute the line with
PyRun_SimpleFile. The following code yields the errors after it.
#include Python.h
int main(int argc, char* argv[])
{
FILE* fp = fopen(c:\\Patches\\Test\\Debug\\test.py,w);
if(fp == NULL)
printf(error);
Py_Initialize();
PyRun_SimpleFile(fp,test.py);
Py_Finalize();
return 0;
}
First-chance exception at 0x77d2dbba in Test.exe: 0xC005: Access
violation writing location 0x0014.
Unhandled exception at 0x77d2dbba in Test.exe: 0xC005: Access
violation writing location 0x0014.
First-chance exception at 0x77d2dbba in Test.exe: 0xC005: Access
violation writing location 0x0014.
Unhandled exception at 0x77d2dbba in Test.exe: 0xC005: Access
violation writing location 0x0014.
In the debug output.
This is the call stack (the first line is where execution halted).
Test.exe!main(int argc=1, char** argv=0x006d1b88) Line 9 + 0x15 bytes
Test.exe!__tmainCRTStartup() Line 586 + 0x19 bytes
Test.exe!mainCRTStartup() Line 403
(There is more after this, but it goes back to system calls and
execution is halted here so I thought this was relevant).
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Re: Problem embedding Python.
I found the problem. Evidently as posted on a few other areas of the
internet, this is a common problem when trying to use compilers that
may have different type definitions for (FILE*). Here is workable
solution:
#include Python.h
int main(int argc, char* argv[])
{
PyObject* PyFileObject;
char* filename;
Py_Initialize();
filename = c:\\Patches\\Test\\Debug\\test.py;
PyFileObject = PyFile_FromString(filename, r);
PyRun_SimpleFile(PyFile_AsFile(PyFileObject), filename);
Py_Finalize();
return 0;
}
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Help with chaos math extensions.
Hi, I have programmed a fractal generator (Julia Set/Mandelbrot Set) in python in the past, and have had good success, but it would run so slowly because of the overhead involved with the calculation. I recently purchased VS .NET 2003 (Win XP, precomp binary of python 2.4.2rc1) to make my own extensions. I was wondering if anyone could help me figure out why I'm getting obscure memory exceptions (runtime errors resulting in automatic closing of Python) with my extension. It seems to run okay if imported alone, but when accompanied in a list of instructions such as a function it crashes. I have implemented it in C and C++, although I prefer the latter. In C I got errors only with certain ranges in my function. I have attached my source to this email and hope someone can help me. Thanks, Brandon c_lib(cpp).tar.gz Description: application/gzip -- http://mail.python.org/mailman/listinfo/python-list
