:mod:`zlib` -- zlib decompression
.. module:: zlib :synopsis: zlib decompression
|see_cpython_module| :mod:`python:zlib`.
This module allows to decompress binary data compressed with DEFLATE algorithm (commonly used in zlib library and gzip archiver). Compression is not yet implemented.
.. function:: decompress(data, wbits=0, bufsize=0, /) Return decompressed *data* as bytes. *wbits* is DEFLATE dictionary window size used during compression (8-15, the dictionary size is power of 2 of that value). Additionally, if value is positive, *data* is assumed to be zlib stream (with zlib header). Otherwise, if it's negative, it's assumed to be raw DEFLATE stream. *bufsize* parameter is for compatibility with CPython and is ignored.