Switched to Python 3

tests/share/generate.py

@@ -1,7 +1,4 @@
-#!/usr/bin/python
-
-from __future__ import division
-from __future__ import print_function
+#!/usr/bin/env python3
 
 import sys
 import random

tests/share/run-test.sh

@@ -8,7 +8,7 @@ set -e
 rm -rf temp
 mkdir -p temp
 echo "generating tests.."
-python generate.py
+python3 generate.py
 
 echo "running tests.."
 for i in $( ls temp/*.ys | sed 's,[^0-9],,g; s,^0*\(.\),\1,g;' ); do