def size_to_bytes(size, largeur=6):
	""" Convert a size in a bytes with k, m, g, t..."""
	if size > 1073741824*1024:
		return  b"%*.2fT"%(largeur, size / (1073741824.*1024.))
	elif size > 1073741824:
		return  b"%*.2fG"%(largeur, size / 1073741824.)
	elif size > 1048576:
		return b"%*.2fM"%(largeur, size / 1048576.)
	elif size > 1024:
		return b"%*.2fK"%(largeur, size / 1024.)
	else:
		return b"%*dB"%(largeur, size)