using os.system and ps2pdf

[iddwb]

Problem.  I need to read stdin, and convert it to pdf.  Luckily, stdin
will give me postscript.  So, I thought I simple script would work.  
Invoking the ps2pdf program manually works fine to create the
pdf.  Unfortunately, the following code doesn't allow ps2pdf to do its
work fully,  It creates an empty pdf.  Is there a better way to call an
external program than os.system?  Alternatively, could reading stdin be
dropping something?

any advice would be appreciated.


#!/usr/local/bin/python

import os, sys, tempfile

if __name__ == '__main__':
    psf = tempfile.mktemp("psf")
    pdf = tempfile.mktemp("pdf")
    ps = open(psf, "w")
    ps.write(sys.stdin.read())
    ps.close
    print "ps2pdf %s %s" % (psf, pdf)
    os.system("ps2pdf %s %s" % (psf, pdf))

David Bear
College of Public Programs/ASU