uzlib

home Introduction

done Pycom Helium Miner
done Pycom Products
done Getting Started
done Tutorials & Examples
done Firmware & API Reference
- done Pycom Modules
- done MicroPython Modules
  - done array
  - done cmath
  - done gc
  - done math
  - done micropython
  - done select
  - done sys
  - done ubinascii
  - done ucrypto
  - done uctypes
  - done uhashlib
  - done ujson
  - done uos
  - done ure
  - done usocket
  - done ussl
  - done ustruct
  - done utime
  - done uzlib
  - done _thread
  - done Builtin
- done Interrupts
done Product Info, Datasheets
done Update Firmware
done Pybytes
done Cellular Services
done Pylife
done Pymesh
done Micropython Support
done Advanced topics
done License

Ask on the forum

uzlib

This module implements a subset of the corresponding CPython module, as described below. For more information, refer to the original CPython documentation: 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. See Compressed Files for examples.

Methods

uzlib.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.

class uzlib.DecompIO(stream, wbits=0)

Create a stream wrapper which allows transparent decompression of compressed data in another stream. This allows to process compressed streams with data larger than available heap size. In addition to values described in decompress(), wbits may take values 24..31 (16 + 8..15), meaning that input stream has gzip header.