def format_bytes(bytes):
	"""
	Format a bytes value into something more readable
	"""
	bytes = float(bytes)
	if bytes >= 1073741824:
		gigabytes = bytes / 1073741824
		size = '%.2fGB' % gigabytes
	elif bytes >= 1048576:
		megabytes = bytes / 1048576
		size = '%.2fMB' % megabytes
	elif bytes >= 1024:
		kilobytes = bytes / 1024
		size = '%.2fKB' % kilobytes
	else:
		size = '%.2fB' % bytes
	return size