如何归档二进制数据

Question

使用zipfile归档data字典：

import os, sys, cPickle, zipfile 
data = {1: 'one'}
pfile = r'c:\temp\myPickle.p'
cPickle.dump( data, open( pfile, "wb" ))

zfilename = r'c:\temp\myArchive.zip'
zfile = zipfile.ZipFile(zfilename, "w", zipfile.ZIP_DEFLATED)
zfile.write(pfile, os.path.basename(pfile))
zfile.close()

该方法会在本地驱动器上生成两个文件：一个是 pickle，另一个是 zip。要腌制 data zip 文件需要取消存档：

fh = open(zfilename, 'rb')
z = zipfile.ZipFile(fh)
for each in z.namelist():
    z.extract(each, r'c:\temp')
fh.close()

如何简化流程？

Answer 1

改用gzip。它会在您编写文件时压缩文件，因此不需要中间文件。

# (python 2) import cPickle as pickle
import pickle
import gzip

data = {1: 'one'}

pfile = r'test.pkl.gz'
pickle.dump(data, gzip.open(pfile, "w"), pickle.HIGHEST_PROTOCOL)
print pickle.load(gzip.open(pfile))

如何归档二进制数据

How to archive binary data

python

zip

pickle

archive