python LZ4 壓縮數據和解壓數據

import lz4.block as lb
import base64
import json


def decompressData(data,length):
	playlist = lb.decompress(data,uncompressed_size=int(length))
	return playlist

def compressData(data):
	compressed = lb.compress(data,store_size=False)  #設置store_size爲false，不在壓縮數據中保存數據長度相關信息
	return compressed
	

def decompressPlay(play):
	"""
	解壓數據
	:param play:字典：將要解壓的數據長度和加密的壓縮數據
	:return:string 解壓後的數據
	"""
	data = play['data']
	length = play['length']
	data1 = base64.b64decode(data.encode('utf-8')) # 編碼爲byte類型後進行base64解密
	data2 = decompressData(data1, length)
	return data2.decode('utf-8')



def compressPlayList(data):
	"""
	執行壓縮playlist的數據
	:param data: string類型，將要壓縮的數據
	:return: 返回壓縮後的字典數據json字符串形式，數據長度和壓縮加密後的數據字符串
	"""
	readyToCompress = data.encode('utf-8')
	playList = {}
	playList['length']=len(readyToCompress)
	print(len(readyToCompress))
	compressed = compressData(readyToCompress) #執行數據壓縮，壓縮後的數據爲byte類型
	database64 = base64.b64encode(compressed)