on a raspbery pi and python 3, i hit an issue where the adafruit module tries to open device 0, which as far i can tell does not exist, so some dependency might not be met - turns out the adafruit module is now deprecated in favour of Blinka if you read the readme there https://github.com/adafruit/Adafruit_Python_GPIO
Will update if i get the new module to work, but i'm a newb at installers, so will be going slowly.