lookup-service-sqlite.py fails importing SPARQLWrapper

[talentoscope]

./lookup-service-sqlite.py labels.db

Traceback (most recent call last):
File "./lookup-service-sqlite.py", line 5, in
from SPARQLWrapper import SPARQLWrapper, JSON
ImportError: No module named SPARQLWrapper

Followed the instructions in README.md to the letter, and the above happens when trying to run the sqlite lookup service.
The other label lookup service lookup-service.py works with no issue.

Maybe something is a prerequisite that isn't in the readme perhaps?

[talentoscope]

Installing python-setuptools and using pip to install flask and SPARQLWrapper worked in Ubuntu 16.04 as opposed to the pypy option. This may be a path issue or similar.