As the original is unmaintained, I forked it and fixed the memory leak issue: /src/_yenc.c line 125: PyBuffer_Release(&data);

Original Readme:

Basic yEnc encoder and decoder for python3.

This module does not parse nor generate the required header(s) or trailer. It only provides a pair of encode and decode functions, which also return the size of the ORIGINAL data (input for encode, output for decode) and the crc32 of the original data.

This module is written in C (yenc) and python (wrapper, crc32). It is written for use by eeeeeric/anchorman, but is available as a separate package as there exists no C yenc module for python3 as of writing.

python setup.py build
python setup.py install

import yenc

size, crc32, encoded = yenc.encode(b'data')
size, crc32, decoded = yenc.decode(encoded)

Use help(yenc) for more information.

You can run tests with

py.test test/test.py

The returned crc32 value is in hex, without any leading "0x"