def pad(data):
	offset = BYTES_IN_PAYLOAD - ((len(data) + 1) % BYTES_IN_PAYLOAD)
	target = len(data) + offset
	data = data.ljust(target, '0')
	data = chr(offset) + data
	return data
Lengthens the given string to the next multiple of
dataset/ETHPy150Open dasmithii/Stone/stone/protocol.py/pad