first pygame application the simple helloworld game is given belowimport pygame def main()print('starting game'print('initialising pygame'pygame init(required by every pygame application print('initialising helloworldgame'pygame display set_mode(( )pygame display set_caption('hello world'print('update display'pygame display update(print('starting main game playing loop'running true while runningfor event in pygame event get()if event type =pygame quitprint('received quit event:'eventrunning false print('game over'pygame quit(if __name__ ='__main__'main(there are several key steps highlighted by this examplethese steps are import pygame pygame is of course not one of the default modules available within python you must first import pygame into you code the import pygame statement imports the pygame module into your code and makes the functions and classes in pygame available to you (note the capitalisation pygame is not the same module name as pygameit is also common to find that programs import from pygame locals import this adds several constants and functions into the namespace of your program in this very simple example we have not needed to do this initialise pygame almost every pygame module needs to be initialised in some way and the simplest way to do this is to call pygame init(this will do what is required to set the pygame environment up for use if you forget to call this function you will typically get an error message such as pygame errorvideo system not initialised (or something similarif you get such