Python点滴7 压缩模块-zipfile（python 压缩gz）

import zipfile,os
os.chdir('c:\\delicious')
exampleZip = zipfile.ZipFile('example.zip')
exampleZip.namelist()
spamInfo = exampleZip.getinfo('spam.txt')
spamFileSize = spamInfo.file_size
spamCompressSize = spamInfo.compress_size
print('Compressed file is %sx smaller!' % (round(spamFileSize / spamCompressSize,2)))

exampleZip.extractall()

exampleZip.close()

#create a *.zip
newZip = zipfile.ZipFile('new.zip','w')
newZip.write ('spam.txt', compress_type=zipfile.ZIP_DEFLATED)
newZip.close()

examNewZip = zipfile.ZipFile('new.zip')
print('new.zip include file is: %s' % (examNewZip.namelist()))

spamFileSize = spamInfo.file_size 获取文件大小

spamCompressSize = spamInfo.compress_size 获取压缩后文件大小

examplZip.extractall（） 将解压压缩包，如果解压目录下存在相同目录，将覆盖。

newZip.write() 目前是支持将一个文件添加到zip文件中（本人理解）

压缩比例，解压缩，添加一个文件到zip文件中