Lossless data compression code snippet with the help of zlib DEFLATE (Lempel–Ziv 1977) compression algorithm.

data_compressor.py

#!/bin/python
import base64
import zlib
import sys

"""
name: data_compressor.py
description: Lossless data compression code snippet with the help of zlib DEFLATE (Lempel–Ziv 1977) compression algorithm.
author: Bryan Angelo Pedrosa
"""

class data_compress:
	def __init__(self,location):
		self.location = location
	def mainsys(self):
		with open(self.location,"rb") as f:
			filedata = zlib.compress(base64.b64encode(f.read()))#read a file; encode with base64; compress (add a buffer if needed)
		return filedata
class data_decompress:
	def __init__(self,location):
		self.location = location
	def mainsys(self):
		with open(self.location,"rb") as f:
			filedata = zlib.decompress(base64.b64encode(f.read()))#read a file; encode with base64; decompress (add a buffer if needed)
		return filedata
if __name__ == "__main__":
	if len(sys.argv) == 3:
		if sys.argv[1] == "compress":
			print(data_compress(sys.argv[2]).mainsys())
		elif sys.argv[1] == "decompress":
			print(data_decompress(sys.argv[2]).mainsys())
	else:
		print("argument must be 3, but you entered %s" % len(sys.argvprogram