Sorry I didn't see this thread until just now. All required libraries, including pylrs, are included in the pielrf distribution (the .zip file).
Every new version of pielrf will require you to run:
python setup.py install
This installs not just the
pielrf executable, but also required libraries. For the pielrf 2.0 (and beyond) version, I broke out a ton of code into a library, and had to make a minor change to pylrs to allow this (hence the 1.0.1 version). Running the above install command does the library installation thing.
-Pie