python compressed

在Python中，可以使用不同的库来进行文件压缩。其中一种常用的库是zlib。使用zlib库，可以对整个文件进行压缩和解压缩。以下是一个使用zlib库进行文件压缩和解压缩的示例代码：

import zlib, sys

filename_in = "data"
filename_out = "compressed_data"

with open(filename_in, mode="rb") as fin, open(filename_out, mode="wb") as fout:
    data = fin.read()
    compressed_data = zlib.compress(data, zlib.Z_BEST_COMPRESSION)
    fout.write(compressed_data)

with open(filename_out, mode="rb") as fin:
    data = fin.read()
    decompressed_data = zlib.decompress(data)

除了zlib库之外，还有其他的压缩库可以在Python中使用。比如lzma库可以实现增量压缩，示例代码如下：

import lzma, os

lzc = lzma.LZMACompressor()

filename_in = "data"
filename_out = "compressed_data.xz"

with open(filename_in, mode="r") as fin, open(filename_out, "wb") as fout:
    for chunk in fin.read(1024):
        compressed_chunk = lzc.compress(chunk.encode("ascii"))
        fout.write(compressed_chunk)
    fout.write(lzc.flush())

with lzma.open(filename_out, "r") as fin:
    words = fin.read().decode("utf-8").split()

另外，还有一个常用的压缩库是bz2库，使用方式与zlib类似，示例代码如下：

import bz2, os, sys

filename_in = "data"
filename_out = "compressed_data.bz2"

with open(filename_in, mode="rb") as fin, bz2.open(filename_out, "wb") as fout:
    fout.write(fin.read())

with bz2.open(filename_out, "rb") as fin:
    data = fin.read()

这些是Python中常用的一些文件压缩库和使用方法。可以根据具体的需求选择适合的库来进行文件压缩。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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