Tim Harig wrote:
On 2010-11-18, noydb <noyd...@gmail.com> wrote:
I have an executable that I want to run within python code. The exe
requires an input text file, the user to click a 'compute' button, and
then the exe calculates several output values, one of which I want to
capture into a variable. Can I use Python to supply the input file,
execute the exe and capture the output value, like such that the exe
really doesn't need to be 'seen'? Or, would the user still have to
click the 'compute' button?
Any code snippets or guidance would be very much appreciated. I have
found that
import os
os.system('C:\xTool\stats_hall.exe')
will run the exe. And, maybe these execl/execle/execlp/etc functions
might be what I need for adding in the argument, but documentation
seems to indicate that these do not return output. ??
If you are not already, I would highly suggest using Python3 with the
subprocess module:
http://docs.python.org/py3k/library/subprocess.html
It puts everything in one place and supercedes the exec* functions which
where a PITA. You can 95% of what you need simply using
subprocess.Popen(). There are several examples from this group in the past
few days; but, the process looks something like this:
Python 3.1.2 (r312:79147, Oct 9 2010, 00:16:06)
[GCC 4.4.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import subprocess
>>> pig = subprocess.Popen(["/usr/games/pig"], stdin=subprocess.PIPE)
>>> result = pig.communicate(input=b"This is sample text.\n")
Isthay isway amplesay exttay.
>>>
Suggesting subprocess is a good idea, *highly* suggesting python3 is
questionable. The above code works in python 2. Many libraries (those
included batteries) have not been ported yet to python 3.
Py3 is a better core language than py2, but for now, less featured.
JM
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