以下模块直接支持通用的数据打包和压缩格式:zlib, gzip, bz2, lzma, zipfile 以及 tarfile。 >>> import zlib
>>> s = b'witch which has which witches wrist watch'
>>> len(s)
41
>>> t = zlib.compress(s)
>>> len(t)
37
>>> zlib.decompress(t)
b'witch which has which witches wrist watch'
>>> zlib.crc32(s)
226805979
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