Python-сообщество

from ctypes import *

CreateToolhelp32Snapshot = windll.kernel32.CreateToolhelp32Snapshot
Process32First           = windll.kernel32.Process32First
Process32Next            = windll.kernel32.Process32Next

TH32CS_SNAPPROCESS  = 0x02L

class PROCESSENTRY32 (Structure) :
    _fields_ = [("dwSize", c_ulong),
                ("cntUsage", c_ulong),
                ("th32ProcessID", c_ulong),
                ("th32DefaultHeapID", c_ulong),
                ("th32ModuleID", c_ulong),
                ("cntThreads", c_ulong),
                ("th32ParentProcessID", c_ulong),
                ("pcPriClassBase", c_ulong),
                ("dwFlags", c_ulong),
                ("szexeFile", c_char * 260)
    ]

def GetProcessList () :
    pe32 = PROCESSENTRY32()
    pe32.dwSize = sizeof(PROCESSENTRY32)

    result   = []
    snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
    ok       = Process32First(snapshot, byref(pe32))
    while ok :
        # выбираем поля, которые считаем нужными
        result.append((pe32.szexeFile, pe32.th32ProcessID, pe32.th32ParentProcessID, pe32.cntThreads))
        ok = Process32Next(snapshot, byref(pe32))
    win32file.CloseHandle(snapshot)
    return result

import subprocess
proc_list = subprocess.Popen('ps -A -o comm', shell=True, stdout=subprocess.PIPE).communicate()[0].split('\n')[1:]