I'm running into an error where when I try 
from PIL import Image, ImageFilter
in a Python file I get an error stating ModuleNotFoundError: No module named 'PIL'.
So far I've tried uninstalling/reinstalling both PIL and Pillow, along with just doing import Image, but the error keeps on occurring and I have no idea why. All the solutions I've found so far have had no effect on my issue. 
I'm running Python 3.5 on Ubuntu 16.04
I solved the issue with the command python3 -m pip install Pillow.
No module named 'PIL'