Uses Pygal and Psutil to create a graph of CPU usage over 60 seconds.

cpu_usage_render.py

import psutil
import pygal
from time import sleep

c = pygal.Line()
c.title = 'CPU Usage Over 1 Minute'
data = []
count = 0
print 'Starting ...'
while True:
    count += 1
    if count == 120:
        c.add('', data)
        c.render_to_file('out.svg')
        print 'Done!'
        break
    data.append(psutil.cpu_percent())
    if count % 10 == 0:
        print count
    sleep(0.5)