dwmstatus.py

import subprocess
from datetime import datetime
from time import sleep, time
import locale

import psutil


locale.setlocale(locale.LC_ALL, locale.getdefaultlocale())

while True:
    t = time()
    sleep(0.5 - (t * 2 - int(t * 2)) / 2. + 0.001)
    subprocess.call(['xsetroot', '-name', "CPU:%s%% MEM:%s%% | %s" % (
        psutil.cpu_percent(), psutil.virtual_memory().percent,
        datetime.now().strftime('%c')
    )])