A simple game by employing pygame packages
Pygame is a cross-platform set of Python modules designed for writing video games. It includes computer graphics and sound libraries designed to be used with the Python programming language. (from wiki: https://en.wikipedia.org/wiki/Pygame)Pygame uses the Simple DirectMedia Layer (SDL) library, with the intention of allowing real-time computer game development without the low-level mechanics of the C programming language and its derivatives.
Here is the doc of Pygame which catagrized the stuffes we can use: https://www.pygame.org/docs/
This simple game have four parts including the classes of characaters and characters' settings the class of opporational functions , the class of game status and the class of invasion
In cluding Monitor the action of keyboards,Display the game,Functions of checking the collisions among ship, aliens and bullets.
