[python]压缩字符

当谈起压缩时我们通常想到文件，比如ZIP结构。在Python中可以压缩长字符，不涉及任何档案文件。

import zlib
 
string =  """   Lorem ipsum dolor sit amet, consectetur
                adipiscing elit. Nunc ut elit id mi ultricies
                adipiscing. Nulla facilisi. Praesent pulvinar,
                sapien vel feugiat vestibulum, nulla dui pretium orci,
                non ultricies elit lacus quis ante. Lorem ipsum dolor
                sit amet, consectetur adipiscing elit. Aliquam
                pretium ullamcorper urna quis iaculis. Etiam ac massa
                sed turpis tempor luctus. Curabitur sed nibh eu elit
                mollis congue. Praesent ipsum diam, consectetur vitae
                ornare a, aliquam a nunc. In id magna pellentesque
                tellus posuere adipiscing. Sed non mi metus, at lacinia
                augue. Sed magna nisi, ornare in mollis in, mollis
                sed nunc. Etiam at justo in leo congue mollis.
                Nullam in neque eget metus hendrerit scelerisque
                eu non enim. Ut malesuada lacus eu nulla bibendum
                id euismod urna sodales. """
 
print "Original Size: {0}".format(len(string))
 
compressed = zlib.compress(string)
print "Compressed Size: {0}".format(len(compressed))
 
decompressed = zlib.decompress(compressed)
print "Decompressed Size: {0}".format(len(decompressed))
 
# output
 
# Original Size: 1022
# Compressed Size: 423
# Decompressed Size: 1022