import StringIO,gzip

content = 'Life is short.I use python'

zbuf = StringIO.StringIO()

zfile = gzip.GzipFile(mode='wb', compresslevel=9, fileobj=zbuf)

zfile.write(content)

zfile.close()

但其实有个快捷的封装，不用用到StringIO模块

f = gzip.open('file.gz', 'wb')

f.write(content)

f.close()

压缩已经存在的文件

import gzip

with open("/path/to/file", 'rb') as plain_file:

    with gzip.open("/path/to/file.gz", 'wb') as zip_file:

        zip_file.writelines(plain_file)

如果不考虑跨平台，只在linux平台，下面这种方式更直接

from subprocess import check_call

check_call('gzip /path/to/file',shell=True)