# chunkSize.py

# chunkSize.py

def chunkSize(num):
    ''' human friendly file size '''
    for unit in [' bytes','k','m','g','t','p','e','z']:
        b=''
        if abs(num) < 1024:
            if len(unit) < 2: b='b'
            return "%3.1f%s%s" % (num, unit, b)
        num /= 1024.0
    return "%.1f%s" % (num, 'yb')
#

import random

z=1
while 1:
    sz=chunkSize(z)
    print z, 'bytes =', sz
    if 'yb' in sz: break
    z*=8
#