Python method for compressing and decompressing large files with gzip

This article describes the Python implementation of the compression and decompression of large files of the method. Share to everyone for your reference, as follows:

#encoding =utf-8#author:walker#date:2015-10-26#summary: Test gzip compression/unzip file import gzipbufsize = 1024*8def gzipfile (src, DST ):  fin = open (src, ' rb ')  Fout = Gzip.open (DST, ' WB ')  in2out (Fin, Fout) def gunzipfile (Gzfile, DST):  fin = Gzip.open (Gzfile, ' RB ')  fout = open (DST, ' WB ')  in2out (Fin, Fout) def in2out (Fin, Fout): While  True:    buf = Fin.read (BufSize)    if Len (BUF) < 1:      break    fout.write (BUF)  fin.close ()  fout.close () if __ name__ = = ' __main__ ':  src = R ' D:\tmp\src.txt '  dst = R ' D:\tmp\src.txt.gz '  ori = R ' D:\tmp\ori.txt '  Gzipfile (SRC, DST)  print (' Gzipfile over! ')  Gunzipfile (DST, ori)  print (' Gunzipfile over! ')

It can also be packaged in a single class:

Class Gziptool:  def __init__ (self, bufSize):    self.bufsize = bufSize    Self.fin = none    Self.fout = None  def compress (self, SRC, DST):    self.fin = open (src, ' rb ')    self.fout = Gzip.open (DST, ' WB ')    self.__ In2out ()  def decompress (self, gzfile, DST):    Self.fin = Gzip.open (Gzfile, ' RB ')    self.fout = open (DST, ' WB ')    Self.__in2out ()  def __in2out (self,): while    True:      buf = Self.fin.read (self.bufsize)      If Len (BUF) < 1:        break      self.fout.write (BUF)    self.fin.close ()    self.fout.close ()