List all the linux/MacOs processes (ps -A) Kill all the processes with a given name

ps.py

#!/usr/bin/env python
# encoding: utf-8
"""
Executes a ps
Kill all processes with a given name
Creator: 2013, Olivier Huin (https://github.com/olih)
License: Eclipse Public License - v 1.0
Contributors:

"""
import sys
import os
import subprocess, signal
import shlex
import string

def ps():
  r=[]
  command_line='ps -A -o "pid %cpu user %mem command"'
  args = shlex.split(command_line)
  p = subprocess.Popen(args, stdout=subprocess.PIPE)
  out, err = p.communicate()
  alllines=out.splitlines()
  lines=alllines[1:] #skip header
  for line in lines:
    [pid_str,cpu_str,user,mem_str,command]=string.split(line,None,4)
    pid=int(pid_str)
    cpu=float(cpu_str)
    mem=float(mem_str)
    info=[pid,cpu,mem,user,command]
    r.append(info)
  return r

#Search a term in the list of commands
def search(term):
  r=[]
  all=ps()
  for p in all:
    [pid,cpu,mem,user,command]=p
    if term in command:
      r.append(p)
  return r

#Kill all the processes with term
def kill(term):
  all= search(term)
  if not all or all==[]:
     return "No processes"
  for p in all:
    [pid,cpu,mem,user,command]=p
    print "killing %s %s" % (pid,command)
    os.kill(pid, signal.SIGKILL)