python中zlib模块是用来压缩或者解压缩数据，以便保存和传输。它是其他压缩工具的基础。下面来一起看看python用模块zlib压缩与解压字符串和文件的方法。话不多说，直接来看示例代码。
例子1：压缩与解压字符串
importzlib message="abcd1234" compressed=zlib.compress(message) decompressed=zlib.decompress(compressed) print"original:",repr(message) print"compressed:",repr(compressed) print"decompressed:",repr(decompressed)结果
original:"abcd1234" compressed:"x\x9cKLJN1426\x01\x00\x0b\xf8\x02U" decompressed:"abcd1234"例子2：压缩与解压文件
importzlib defcompress(infile, dst, level=9): infile=open(infile,"rb") dst=open(dst,"wb") compress=zlib.compressobj(level) data=infile.read(1024) whiledata: dst.write(compress.compress(data)) data=infile.read(1024) dst.write(compress.flush()) defdecompress(infile, dst): infile=open(infile,"rb") dst=open(dst,"wb") decompress=zlib.decompressobj() data=infile.read(1024) whiledata: dst.write(decompress.decompress(data)) data=infile.read(1024) dst.write(decompress.flush()) if__name__=="__main__": compress("in.txt","out.txt") decompress("out.txt","out_decompress.txt")结果
生成文件
out_decompress.txt out.txt问题——处理对象过大异常
>>>importzlib
>>> a="123"
>>> b=zlib.compress(a)
>>> b
"x\x9c342\x06\x00\x01-\x00\x97"
>>> a="a"*1024*1024*1024*10
>>> b=zlib.compress(a)
Traceback (most recent call last):
File"
【python如何用模块zlib压缩与解压字符串和文件夹】python如何用模块zlib压缩与解压字符串和文件
http://m.bbyears.com/jiaocheng/116119.html
推荐访问: