(This message was top-posted, and sent off-list. So I'm copying it back
to the list, with my response at the end)
Chris Chapman wrote:
Thanks Dave. You know after trying your suggestion on the command prompt it
doesn't as a matter of fact. Not sure why I didn't just try that in windows to
begin with. Guess I got stuck more on the python issue then it being the other
program.
There is an option for it to create an HTML log file, but it's formatted sort
of strangely. I'm really not looking to parse through it just for a summary
like that presented on the terminal. I'm not sure if you know but I'm guessing
parsing the HTML would be a lot easier the trying to capture the console output
from the buffer, huh? Thanks again for the help.
Chris
Date: Mon, 27 Jul 2009 08:28:51 -0400
From: da...@ieee.org
To: oxydol...@hotmail.com
CC: python-wi...@python.org
Subject: Re: [python-win32] subprocess and stdout
Christopher Chapman wrote:
I'm trying to write a "module" to a larger program. This module eventually
needs to reference a config file with setup information in it, but I'm not
there yet. I'm using the subprocess module to run an external antivirus
program and trying to get the output written to a log file, but I keep
getting a weird return. My code is listed below. I'm a noob to Python so
I'm not sure if this is a windows specific issue or not, but I'm programming
on windows and more then likely what I'm working on won't be on anything
other then a windows machine. I'm also writing my code for 3.1 if that
makes any difference.
# Pass target path to scanners command line and write output to a file
# Currently "scan" only targets the McAfee Command Line Scanner
print()
print ("Begining scan of " + target)
print()
scan = "scan /all " + target
s = subprocess.Popen(scan,
stdout=subprocess.PIPE)
out = s.communicate()[0]
chgout = str(out)
s.wait()
scanlog.write(chgout)
scanlog.close
"
If I change my stdout in s subprocess to None then everything gets written
to the terminal as if I had just run the program straight from the command
line, but when I try piping it to my file "scanlog" then literally the only
return I get in the file is '' or two single quotes. I've even tried piping
the output and then printing it instead of writing it to a file and I get
the same result. I've experimented with standard windows command line
commands and using the same syntax was able to pipe directory listings and
other things to my file. Any ideas what I'm missing here? Thanks in
advance
Chris Chapman
I suspect it's because of the way the antivirus program is written. I
can't be sure what you tried at the command prompt, but have you tried this:
c:\>scan /all > scanlog.txt
If this does not capture to the file, then scan.exe isn't written in the
way you're expecting. There are several ways to write directly to a
console that do not redirect or pipe.
You might also look to see whether scan has any other commandline
options. One of them might be to create a log file.
DaveA
I wouldn't know where to begin trying to capture output that another
process sends to its console window. While I'm sure it's possible, I do
suspect that parsing the html would be easier. Remember that even if it
looks ugly, it is generated by program, and it's quite possible that you
could throw away the fluff and end up with a simple summary. There are
libraries to make this easier, but I've never used them. If it's valid
xhtml, which is by definition valid xml, you might find it useful to use
elementree. But most html is buggy, and parsing that takes a more
tolerant parser.
DaveA
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