safarijv/python-epubcheck — pull request #1 by Zaheers (2014-08-19 13:02:45+00:00)
Title: Update checker.py

In Python 3 proc.communicate() returns instead of which results in:
TypeError: Type str doesn't support the buffer API.

This happens because of the check
'Runtime' in output
where output is of type bytes.

A working solution for me was to cast the bytes of output into a string.