gistfile1.txt

import stat

def is_world_readable(path):
   return os.stat(path).st_mode & stat.S_IROTH

tempdir = tempfile.gettempdir()
if not is_world_readable(tempdir):
   if not is_world_readable('/tmp'):
      print "ERROR: Can't create temporary file."
      exit()
   # The postgres user probably can't read
   # from the temp dir, so let's set
   # it to /tmp.
   tempfile.tempdir = '/tmp'

script_content = """#!/bin/sh
echo 'Hello!'
"""

fd, temp_path = tempfile.mkstemp()
f = os.fdopen(fd, 'w')
f.write(script_content)
f.close()

os.chmod(temp_path, 0775)