How to compress and decompress gzip large files in Python

The example in this article describes the method of compressing and decompressing gzip large files in Python. Share it with everyone for your reference, the details are as follows:

#encoding=utf-8
#author: walker
#date: 2015-10-26
#summary: 测试gzip压缩/解压文件
import gzip
BufSize = 1024*8
def 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__ == &#39;__main__&#39;:
  src = r&#39;D:\tmp\src.txt&#39;
  dst = r&#39;D:\tmp\src.txt.gz&#39;
  ori = r&#39;D:\tmp\ori.txt&#39;
  gZipFile(src, dst)
  print(&#39;gZipFile over!&#39;)
  gunZipFile(dst, ori)
  print(&#39;gunZipFile over!&#39;)

It can also be simply encapsulated into a 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()

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