Yes, I do.
Here's a full breakdown of the directory structure, in words (I don't know what the standard is to show this in a more accessible way).
Extracting the .zip gives me a "_MAXOSX" directory, which I assume I can just ignore, and an "UnRen v0.8.2" dir.
Inside that dir is an "UnRen Tools" dir, a ".DS_Store" file and an "UnRen.command" file.
Inside the "UnRen Tools" dir is a "decompiler" dir, another ".DS_Store" file, and the files "rpatool" and "unrpyc.py".
Inside the "decompiler" dir are nine .py files.
I thought maybe they were in the wrong place and that's why it couldn't find them, but I've copied them both to the same dir as the .command file and it still can't find them.
Along a similar train of thought I've tried, seperately, renaming the "UnRen v0.8.2" dir and "UnRen Tools" dir to "UnRen v0.8.2 Tools", as that is what the error said. No luck.
I installed python2 through apt-get. My python2 --version output is: Python 2.7.18rc1