I\'m trying to change matplotlib\'s default font to Helvetica Neue. On my Mac with EPD/Canopy everything worked fine some time ago.
Trying to do the same on ubuntu
The font cache shows up in a different place for me (.cache/matplotlib/fontList.cache). And before I actually had three of them in different places somehow :/
maybe try searching for it in your home directory:
find ~/ -name fontList.cache -exec rm {} \;