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"""Data Compression.

@see: https://docs.python.org/3/tutorial/stdlib.html#data-compression

Common data archiving and compression formats are directly supported by modules including: zlib,

gzip, bz2, lzma, zipfile and tarfile.

"""

import zlib

def test_zlib():

"""zlib."""

string = b'witch which has which witches wrist watch'

assert len(string) == 41

zlib_compressed_string = zlib.compress(string)

assert len(zlib_compressed_string) == 37

zlib_decompressed_string = zlib.decompress(zlib_compressed_string)

assert zlib_decompressed_string == b'witch which has which witches wrist watch'

assert zlib.crc32(string) == 226805979