Eurobros be free

def scramble(data):
	res = bytearray()
	print(data[0], type(data))
	for d in data:
		print(d, 97)
		res += bytes([d, 97])
	res = bytes(res)
	print(res)
	return bytes(res)

def unscramble(data):
	res = bytearray()
	c = 0
	for d in data:
		if not c % 2:
			res.append(d)
		c+=1
	return bytes(res)


test = scramble(open("test.txt", "rb").read())
print(unscramble(test))