init: pip install -r requirements.txt --use-mirrors test2: nosetests-2.7 tests test3: nosetests-3.3 tests simple_test2: nosetests-2.7 tests/test_backend_simple.py advanced_test2: nosetests-2.7 tests/test_backend_advanced.py simple_test3: nosetests-3.3 tests/test_backend_simple.py advanced_test3: nosetests-3.3 tests/test_backend_advanced.py