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POWeird subprocess issue with Django
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  1. POWeird subprocess issue with Django
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    copied!<p>I'm sorry if this is a duplicate question, but after searching through 3 pages for "django subprocess", I, for one, could not find the answer to my particular problem. </p> <p>I'm trying to run <code>pdflatex</code> on <code>tex</code> file, but for some reason in Django it doesn't produce anything. It works just fine in a regular python script, though. I've omitted most of the code here, but this is basically the important bit. I'm running this on apache2 with mod_wsgi, and I suspect that it might be an apache permissions related problem, dunno though. Thanks in advance.</p> <pre><code>import subprocess test = subprocess.Popen(['pdflatex','/home/sheepz/test.tex'],shell=True, stdout=subprocess.PIPE) log = open('/home/sheepz/log.log', 'w') log.write(str(test.communicate())) log.close() the content of the file "log.log": ('This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian)\n restricted \\write18 enabled.\n**\n! End of file on the terminal... why?\n', None) </code></pre> <p>EDIT: The solution for this issue is quite easy. I just want to add it here, so everyone who's having trouble with this, can find it. Basically it involves running the site as a different user rather than www-data using the <a href="http://code.google.com/p/modwsgi/wiki/ConfigurationDirectives#WSGIDaemonProcess" rel="nofollow noreferrer">WSGIDaemonProcess</a> configuration directive. Here is a minimal configuration:</p> <pre><code>ServerName www.mysite.com ServerAlias *mysite.com WSGIDaemonProcess www.mysite.com user=joe group=joe home=/home/joe/ WSGIProcessGroup www.mysite.com </code></pre> <p>Also, it would be advisable to add <code>WSGIRestrictStdout Off</code> to your httpd.conf, because, as far as I understand, mod_wsgi ignores any process that tries to use stdout. Thanks, Graham.</p>
 

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