File list (Check if you may need any files):
175-ch13-6-Collisions
.....................\__pycache__
.....................\...........\Alien.cpython-32.pyc
.....................\...........\Bomb.cpython-32.pyc
.....................\...........\cTurtle.cpython-32.pyc
.....................\...........\GameDirector.cpython-32.pyc
.....................\...........\LaserCannon.cpython-32.pyc
.....................\...........\Utils.cpython-32.pyc
.....................\Alien.py
.....................\AlienInvaders.py
.....................\Bomb.py
.....................\GameDirector.py
.....................\LaserCannon.py
.....................\readme.txt
.....................\ufo_d.gif
.....................\Utils.py