make setup.py not crash in Python 3 (related to #111)
make setup.py not crash in Python 3 (related to #111)

jsannemo/problemtools,jsannemo/problemtools,ghamerly/problemtools,Kattis/problemtools,jsannemo/problemtools,Kattis/problemtools,Kattis/problemtools,ghamerly/problemtools,jsannemo/problemtools,ghamerly/problemtools,Kattis/problemtools,ghamerly/problemtools