import win32pdh, string, win32api

def procids():
    #each instance is a process, you can have multiple processes w/same name
    junk, instances = win32pdh.EnumObjectItems(None,None,'process', win32pdh.PERF_DETAIL_WIZARD)
    proc_ids=[]
    proc_dict={}
    for instance in instances:
        if instance in proc_dict:
            proc_dict[instance] = proc_dict[instance] + 1
        else:
            proc_dict[instance]=0
    for instance, max_instances in proc_dict.items():
        for inum in xrange(max_instances+1):
            hq = win32pdh.OpenQuery() # initializes the query handle 
            path = win32pdh.MakeCounterPath( (None,'process',instance, None, inum,'ID Process') )
            counter_handle=win32pdh.AddCounter(hq, path) 
            win32pdh.CollectQueryData(hq) #collects data for the counter 
            type, val = win32pdh.GetFormattedCounterValue(counter_handle, win32pdh.PDH_FMT_LONG)
            proc_ids.append((instance,str(val)))
            win32pdh.CloseQuery(hq) 

    proc_ids.sort()
    return proc_ids


print procids()