OS.SYSTEM ERROR !!!

[Blubaugh, David A.]

To All,


I have been attempting to execute the following program within the
Python environment:

Myprogram.exe, which means this is an executable file!!

I would usually execute this program (with the appropriate arguments) by
going to following directory within MS-DOS (Windows XP):

C:\myprogramfolder\run> Myprogram.exe 1 1 acc 0


The executable would execute perfectly.


However, when I would try to execute the following lines of source code
within a python script file:

import os

os.system(r"C:\myprogramfolder\run\Myprogram.exe 1 1 acc 0")


The executable file would start to execute until it would print an error
stating that it cannot use a (.dat) file, which is located under the
following directory:


C:\myprogramfolder\run\inputs\io\control.dat


I believe I may be missing something here that prevents the executable
file working within python from utilizing this (.dat). The printed
final error is the following:

ERROR opening inputs/io/control.dat

Does anyone know what that could be ??


Thanks,


David Blubaugh





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[Carsten Haese]

To All,


I have been attempting to execute the following program within the
Python environment:

Myprogram.exe, which means this is an executable file!!

I would usually execute this program (with the appropriate arguments) by
going to following directory within MS-DOS (Windows XP):

C:\myprogramfolder\run> Myprogram.exe 1 1 acc 0


The executable would execute perfectly.


However, when I would try to execute the following lines of source code
within a python script file:

import os

os.system(r"C:\myprogramfolder\run\Myprogram.exe 1 1 acc 0")


The executable file would start to execute until it would print an error
stating that it cannot use a (.dat) file, which is located under the
following directory:


C:\myprogramfolder\run\inputs\io\control.dat


I believe I may be missing something here that prevents the executable
file working within python from utilizing this (.dat). The printed
final error is the following:

ERROR opening inputs/io/control.dat

Does anyone know what that could be ??

The program (myprogram.exe) is not looking for
C:\myprogramfolder\run\inputs\io\control.dat, it's looking for
inputs/io/control.dat relative to its current working directory. That
will only work if the current working directory of the program is
C:\myprogramfolder\run. Is it?

 

[giltay]

I would usually execute this program (with the appropriate arguments) by
going to following directory within MS-DOS (Windows XP):

C:\myprogramfolder\run> Myprogram.exe 1 1 acc 0 [snip]
import os

os.system(r"C:\myprogramfolder\run\Myprogram.exe 1 1 acc 0") [snip]
ERROR opening inputs/io/control.dat

[snip]

I would add the following line right before your call to os.system:

os.chdir(r'C:\myprogramfolder\run')

If you have to change directories to run it properly in the Windows
shell, then you need to do it in Python, too.

HTH,
Geoff G-T