After the latest apt update, w3af failed to start with the following message: Exception: "There was an error while importing w3af.plugins.output.console: "No module named darts.lib.utils.lru"."
I couldn't find a distro package, so the following steps helped me for anyone else who encounters this:
Make sure you have python-setuptools installed
Code:
apt-get install python-setuptools
git clone https://github.com/deterministic-arts/DartsPyLRU.git
cd DartsPyLRU
python setup.py install
Then w3af should launch without issue.