Convert bytes to human readable units

tack_h.py

#!/usr/bin/env python3
# encoding: utf-8

import math


def human_readable_base2(bytes):
	units = ('B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB')
	return human_readable(bytes, 1024, units)


def human_readable_base10(bytes):
	units = ('B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB')
	return human_readable(bytes, 1000, units)


def human_readable(bytes, base, units):
	
	size = math.log(bytes, base)
	# round
	approx_size = math.trunc(size + 0.1)

	return (bytes / base**approx_size, units[approx_size])