#!/usr/bin/env python
import string
import commands, os, string
try:
    #
    httpd = commands.getoutput("ps ax|grep " + "httpd")
    proginfo = string.split(httpd)
    httpd = 'httpd'
    for i in proginfo:
        if httpd in i:
            print "Process httpd", i
except:
    print "There was a problem with the program."

>>> p = ['python','bluetooth']
>>> d = commands.getoutput('ps x').splitlines()
>>> [filter(lambda x:i in x,d)[0].split()[0] for i in p]
['2291', '2004']

>>> import psutil
>>> print psutil.get_pid_list()
[0, 4, 932, 1044, 1072, 1116, 1128, 1280, 1300, 1392, 1492, 1640, 1748, 1844, 19
16, 2004, 508, 704, 736, 740, 776, 872, 1036, 1620, 1656, 1664, 1756, 1852, 2144
, 2160, 2208, 2248, 2276, 2320, 2360, 2388, 2444, 2496, 3844, 2996, 2492, 3196,
328, 1780, 804, 2344, 3404, 2460, 3520, 2348, 3500, 3280, 1536]
>>> for p in psutil.process_iter():
...     if p.name == 'httpd.exe':
...             print p.get_connections()
...
[connection(fd=-1, family=2, type=1, local_address=('0.0.0.0', 80), remote_addre
ss=(), status='LISTEN')]
[]

>>> import psutil
>>> print set([ p.name for p in psutil.process_iter() ])

>>> print set([ p.name for p in psutil.process_iter() ])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.5/site-packages/psutil/__init__.py", line 162, in name
    name = self._platform_impl.get_process_name()
  File "/usr/local/lib/python2.5/site-packages/psutil/_psbsd.py", line 72, in wrapper
    raise NoSuchProcess(self.pid, self._process_name)
psutil.error.NoSuchProcess: process no longer exists (pid=90332)